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Comic Book Physics

An anonymous reader writes "Seems many of the feats of SpiderMan, Superman and other superheroes obey the basic requirements of physics. So says a University of Minnesota physicist who uses nothing but comics to teach the subject. 'Comic books get their science right more often than one would expect ... I was able to find examples in superhero comic books of the correct descriptions of basic physical principles for a wide range of topics, including classical mechanics, electricity and magnetism, and even quantum physics.' Especially cool: Why Krypton *had* to explode."

191 of 579 comments (clear)

  1. A Big Mystery by cyranoVR · · Score: 5, Funny

    How do the breasts of all those super-heroines manage to defy gravity so well?

    1. Re:A Big Mystery by mlibby · · Score: 5, Funny

      ah, yes, well that is where super-powers come into play.

      and, to paraphrase Calvin, "apparently her superpower is being able to fit into that skin-tight suit".

    2. Re:A Big Mystery by LauraScudder · · Score: 5, Funny

      Man! The best female superpower my friend and I could come up with was the ability to cloud men's minds. I guess those two are related though...

    3. Re:A Big Mystery by cujo_1111 · · Score: 2, Funny

      Nothing a large quantity of duct tape can't get under control.

      They got Pamela Anderson's mammaries under control in Barb Wire, gotta take your hat off to the undergarment engineer right there.

      --
      If I point out that you are incorrect, making me a foe does not make you any more correct.
    4. Re:A Big Mystery by G-funk · · Score: 4, Funny

      That's superhero physiques, which is down the hall to your left.

      --
      Send lawyers, guns, and money!
    5. Re:A Big Mystery by Anonymous Coward · · Score: 5, Informative

      and, to paraphrase Calvin, "apparently her superpower is being able to fit into that skin-tight suit".

      That was Hobbes. To which Calvin replied, "Nah, they can all do that."

  2. Worst. Slashdot Article. Ever. by Zalgon+26+McGee · · Score: 3, Funny

    http://jpaudio.com/bullshitgas/comic_book_guy.jpg

    --

    ---

    Book(n): Utensil used to pass time while waiting for the TV repairman

  3. Plot device by ObviousGuy · · Score: 5, Funny

    Krypton had to explode. If it did not, there would have been no incentive for Kal'el to send his son to Earth. Without Clark landing on Earth, the whole Superman series wouldn't have made much sense.

    That said, has anyone noticed that the names of the Krypton citizens were all slightly Jewish? Jor'el, Kal'el, and the others all sound like townships in Israel.

    Maybe it's just me.

    --
    I have been pwned because my /. password was too easy to guess.
    1. Re:Plot device by BitterOak · · Score: 5, Informative
      Krypton had to explode. If it did not, there would have been no incentive for Kal'el to send his son to Earth.

      I thought it was Jorel who sent his son to Earth. Wasn't Kalel the son's (i.e. Superman's) name?

      --
      If I can be modded down for being a troll, can I be modded up for being an orc, or a balrog?
    2. Re:Plot device by robindmorris · · Score: 5, Informative

      The "el" ending means "god" (essentially), so it's not surprising that these names end up sounding slightly Jewish.

    3. Re:Plot device by sofakingl · · Score: 5, Interesting

      The creators of Superman were Jewish. They needed names that sounded alien for the characters, so they just used Hebrew sounding names, which at the time wouldn't be that well recognized by the general public.

    4. Re:Plot device by cujo_1111 · · Score: 5, Interesting

      Go and read this article about one of the creators of Superman.

      --
      If I point out that you are incorrect, making me a foe does not make you any more correct.
    5. Re:Plot device by Anonymous Coward · · Score: 5, Funny

      You guys call yourselves Nerds? Get with the program, it's Kal-El and Jor-El. The hyphen and capital "E" are important.

      Rookies.

      PS: Did you know that the "El" family lived next door to the "Em"?

    6. Re:Plot device by Anonymous Coward · · Score: 2, Insightful

      I've always thought that the houses (family names) of Krypton were based off of the letters in the Americal alphabet. So we have the house of El (Kal-El, Jor-El, Zor-El), their neighbours, the house of Em (Dev-Em) and the final house, the house of Zee (Van-Zee)

    7. Re:Plot device by Anonymous Coward · · Score: 2, Funny

      those wacky jews...

    8. Re:Plot device by unitron · · Score: 2, Funny
      In the comic books of the late 50s, early 60s, they used hyphens, i.e, Jor-El, Kal-El, etc.

      Only vaguely related, last read Spiderman comics in the 60s, but only realised recently in retrospect that Stan was probably writing Peter Parker as Jewish.

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

    9. Re:Plot device by Lord+Kano · · Score: 4, Interesting

      The "el" ending means "god" (essentially), so it's not surprising that these names end up sounding slightly Jewish.

      In Hebrew "el" as a suffix could mean "God" or "Of God", for example if we were to look at the names of angels Michael means "who is as God", Gabriel translates to "God is my strength" or possibly "my strength is God", Israel means "Striver with God", Usiel means "Strength of God", Raziel means "the secret of God".

      At one time Christians were so fond of tacking on el to the end of a word to create an angel that in 745 the church forbade the faithful to call on any angel other than Raphael, Gabriel and Michael. (the three mentioned by name in their canonical teachings)

      LK

      --
      "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
    10. Re:Plot device by dameon · · Score: 2, Funny

      Actually, acording to the translations the Israelite god's name is mereley YHWH. That is as close to English as I can get you.

      Imagine, all those Jew's saying Yahweh all the time. Sort of like mispronouncing God's name? I'd be pissed

      --
      Remember, a truly wise man never plays leapfrom with a unicorn
    11. Re:Plot device by Anonymous Coward · · Score: 2, Informative

      It's written "YHWH" simply because hebraic written language doesn't include the vowels. They're supposed to be self-explanatory. AFAIK, Arabic doesn't include vowels either, for that matter.

    12. Re:Plot device by MadChicken · · Score: 5, Informative

      Not really, the name was SPELLED YHWH, since they didn't need to write the vowels (they were understood). That is definitely not how it was PRONOUNCED.

      Some have said the vowels came from the Greek "Adonai" to give you, roughly, Yahowah. That is convenient but not 100% accurate. Other names like Joshua (Yehoshua) and many others contain the divine name have and preserved the proper vowels through common use. The pronunciation was almost certainly Yehowah in Hebrew -- and in English it *is* "Jehovah" (no need to mix languages in a sentence).

      How's THAT for offtopic? I never expected to discuss Hebrew phonetics in an article about comic book physics!

      --
      SYS 64738 NO CARRIER
    13. Re:Plot device by Anonymous Coward · · Score: 2, Interesting

      Actually, in the first sentence of the bible ("In the beginning god...") uses the plural form of the word, "elohim", so it actually says "In the beginning the gods...". Elohim is used more than 2000 times throughout the old testament.

      Might be because lots of the storys are older myths from other religions (for instance the flood story which is found in Gilgamesh and lots of other places)

    14. Re:Plot device by payne · · Score: 3, Funny

      So does that mean that Superman and Emenem are neighbors? :)

      --
      Build an idiot-proof system and the world will build a better idiot. --unknown
    15. Re:Plot device by Lexic0n · · Score: 4, Interesting

      The creators of Superman were Jewish. "Kal-El" means something like "All that is God" in Hebrew. (Not sure on Jor-El.) Superman was created around the time of World War II, a time when the Jewish people of Europe were especially beset upon. His homeland is destroyed and his people eliminated -- sound like anything familiar? He is placed in something like a basket and floated out into space, a parallel to Moses. He is raised by a people not his own and rises to prominence in that society, also similar to Moses.

      Superman is actually a Jewish icon! He was created to give hope and encouragement to Jewish people the world over during a particularly bleak period in their history.

    16. Re:Plot device by Paradise+Pete · · Score: 3, Funny
      the name was SPELLED YHWH...That is definitely not how it was PRONOUNCED.

      It's spelled YHWH, but it's pronounced Throat-Wobbler Mangrove.

    17. Re:Plot device by Scrameustache · · Score: 4, Funny

      The creators of Superman were Jewish. They needed names that sounded alien for the characters, so they just used Hebrew sounding names, which at the time wouldn't be that well recognized by the general public.

      Had they been your run-of-the-mill regular good ol' Canadians, we would have had slightly different alien names.

      Kal'Eh, Jor'Eh...

      --

      You can't take the sky from me...

    18. Re:Plot device by Hadean · · Score: 2, Informative
      For anyone who's interested, a good (but possibly biased) source for the history of the word can be found here.


      Elohim is the common name for God. It is a plural form, but "The usage of the language gives no support to the supposition that we have in the plural form Elohim, applied to the God of Israel, the remains of an early polytheism, or at least a combination with the higher spiritual beings" (Kautzsch). Grammarians call it a plural of majesty or rank, or of abstraction, or of magnitude (Gesenius, Grammatik, 27th ed., nn. 124 g, 132 h). The Ethiopic plural amlak has become a proper name of God. Hoffmann has pointed out an analogous plural elim in the Phoenician inscriptions (Ueber einige phon. Inschr., 1889, p. 17 sqq.), and Barton has shown that in the tablets from El-Amarna the plural form ilani replaces the singular more than forty times (Proceedings of the American Oriental Society, 21-23 April, 1892, pp. cxcvi-cxcix).
    19. Re:Plot device by weierstrass · · Score: 2

      Written arabic does have vowels. In fact, the first letter of the Arabic alphabet is alif (= a). There are two types of vowels though - stressed ones, which are always written, and unstressed ones, which are written a bit like accents above and below the words, and which are usually left out.

      OT i know, but people get this wrong ALL the time, and i have no idea why.

      --
      my password really is 'stinkypants'
    20. Re:Plot device by Ryosen · · Score: 2, Informative

      Bullocks. It's written as YHWH simply because, in the Jesish faith, you are forbidden to write out or pronounce the full name of G-d. <-- hence this spelling...

      --

      Ryosen
      One man's "Troll, +1" is another man's "Insightful, +1".
    21. Re:Plot device by Art+Tatum · · Score: 2, Funny

      Actually, they're one and the same person. Mild-mannered superhero who fights for justice by day, stupid white pseudo-rapper by night. But no one in the hood can put 2 and 2 together. Not surprising, since none of them made it successfully through 2nd grade.

  4. Bullet Physics by superpulpsicle · · Score: 5, Interesting

    A man shoots a bullet toward superman's chest, the bullet bounces off. No problem... I can buy that.

    What I can't accept is, why is there no bullet holes in the shirt? Do superheroes wear some special brand? Study that...

    1. Re:Bullet Physics by RedFive · · Score: 5, Funny

      His custume is made from the material he was wrapped in on his journey from Krypton. Sheesh, even I know that :-)

      --
      RedFive jedi_knight111@hotmail.com
    2. Re:Bullet Physics by platipusrc · · Score: 5, Informative

      In a Lois and Clark episode, Superman said that he had a small field of invincibility around him that protected his clothing or anything else within its range. I believe that was in response to Lois asking why his suit could be damaged in the closet, but it was never damaged when he was wearing it.

      --
      And the muscular cyborg German dudes dance with sexy French Canadians
    3. Re:Bullet Physics by Fuzzle · · Score: 5, Interesting

      Actually, this is explained in John Byrne's mini-series/relaunch The Man Of Steel, in which Ma Kent sews Clark his first costume, and they talk about how the material close to his body seems to become impervious to damage, while something like his cape, which isn't skin-tight gets shredded all the time, because it isn't as close.

    4. Re:Bullet Physics by NewbieProgrammerMan · · Score: 5, Funny

      Apparently the shirt is made from the same stuff as the Hulk's pants. It cuts down on the special-effects budget for Superman movies, and eliminates the fuzzy blue dot and R-rating budgets for Hulk movies.

      In the older Superman TV shows, it was funny that he could stand there and deflect bullets, and yet he ducked when the shooter ran out of bullets and threw the gun at him.

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    5. Re:Bullet Physics by pranay · · Score: 5, Interesting

      If the tension in a cloth is too great, and it is backed by a hard srface like superman muscles, it can deflect bullets without absorbing too much impact energy itself. Most bullet proof jackets are made of layers that deaccelerate the bullets by absorbing the energy, and so they get holes. Try shooting at a piece of cloth tightly wrapped around a solid titanium block, the bullet will deflect, and the cloth will remain intact.

    6. Re:Bullet Physics by cowscows · · Score: 5, Interesting
      I'm no expert on these sorts of things, but here's how I see it. Imagine I'm wearing a shirt that you really don't like. So you hit me in the chest with a hammer. The hammer crushes through my ribcage and creates a nice hole. My shirt gets stretched down into this new hole by the hammer, and eventually tears from the tension of it stretching. As I slowly bleed to death and whine, you notice another shirt, exactly like the one I was wearing, sitting in the street behind me. (Maybe I'm selling them and I dropped one when you hit me). So it a fit of rage, you try to destroy the shirt laying in the road. The hammer smashes the cloth against the ground before bouncing back up, but probably doesn't do any real damage to the cloth.


      Now, a bullet probably has a bit more energy in it than a hammer swung by most people, but I imagine it'd work in a similar fashion. And Superman's body seems to be made of something even stronger than asphalt.


      But I could be very wrong. and the article could explain it infact. It's too busy for me to read at the moment.

      --

      One time I threw a brick at a duck.

    7. Re:Bullet Physics by hubie · · Score: 3, Funny

      What I liked better is in the TV series, (the old one with George Reeves, not that sappy Lois and Clark), the bad guy shoots at Superman and he stands there with his chest out smiling as the bullets bounce off. The bad guy empties his gun, and with no other options in front of him he throws the gun at Superman, who then ducks so he doesn't get hit.

    8. Re:Bullet Physics by StenD · · Score: 4, Insightful

      Chalk it up to poor scripting. The bullets were FX, but the thrown gun was real. :)

    9. Re:Bullet Physics by Catnapster · · Score: 5, Funny

      That has to be the most violent analogy I've ever seen used.

      --
      The world can be wrong today for once.
    10. Re:Bullet Physics by Dylan+Zimmerman · · Score: 4, Interesting

      Actually, they changed that. Now, he radiates a small field that protects anything within about two millimeters of his skin. I forget when they changed it, but I do remember reading that his costume was made from the cloth from Krypton. However, this raises the question, how could it be cut and tailored? If it's immune to bullets, then one would expect it to resist being cut quite well.

    11. Re:Bullet Physics by paulgrant · · Score: 5, Informative

      actually no. nice try though.

      #1 - any deflection in the bullet path ("ricochet") would have to at some point, engage the material as its path curved..

      #2 - the material itself would be mashed (and probably torn) just by the sheer collision of a fast bullet and the wall.

    12. Re:Bullet Physics by endofoctober · · Score: 5, Interesting

      In the original Superman, didn't Ma Kent make Kal-El's first clothes out of cloth from the interior of the ship that brought the baby to Earth? I always thought the cloth itself, coming from Krypton's red sun atmosphere, would be less impervious to damage in Earth's yellow sun environment.

      The Byrne explanation was a little too "plucked out of thin air". Sometimes the best explanations are the simple ones.

      --
      - Jack
    13. Re:Bullet Physics by paulgrant · · Score: 2, Interesting

      #3 - the heat of the bullet
      #4 - the flattening of the bullet against the chest

    14. Re:Bullet Physics by Dachannien · · Score: 5, Funny

      "In the older Superman TV shows, it was funny that he could stand there and deflect bullets, and yet he ducked when the shooter ran out of bullets and threw the gun at him."

      That's because getting hit in the face with a gun hurts!

    15. Re:Bullet Physics by forgotmypassword · · Score: 5, Funny

      However, this raises the question, how could it be cut and tailored? If it's immune to bullets, then one would expect it to resist being cut quite well.

      Why the same way he cuts his hair!

      With his laser vision and an ideal vanity mirror that he apparently got from physics class along side the massless rope and frictionless pully.

      (I am not making this up ... well I made up where he got the mirror)

    16. Re:Bullet Physics by Graff · · Score: 2, Interesting
      In the original Superman, didn't Ma Kent make Kal-El's first clothes out of cloth from the interior of the ship that brought the baby to Earth? I always thought the cloth itself, coming from Krypton's red sun atmosphere, would be less impervious to damage in Earth's yellow sun environment.

      That explanation always sounded fishy to me. The material won't get ruined by extreme heat/bullets/corrosive chemicals but it can be cut with scissors and tailored with a needle? Hmm...

      At least the "impervious field" explanation is internally-consistant, no matter how contrived it sounds. Generally a contrived answer that is self-consistant is better than a simple answer that begs more questions.
    17. Re:Bullet Physics by prockcore · · Score: 2, Informative

      What I can't accept is, why is there no bullet holes in the shirt? Do superheroes wear some special brand? Study that...

      I'm a big fan of Smallville (surely the next show that WB will stupidly cancel), and whenever clark gets shot, there are bullet holes in his clothing.

    18. Re:Bullet Physics by Cruciform · · Score: 3, Informative

      Solid titanium?

      It would shatter wouldn't it? It's extremely brittle unless in an alloy.

      Any metallurgists out there? Edu-ma-cate us!

    19. Re:Bullet Physics by unitron · · Score: 5, Informative
      Martha Kent took the kid's baby blankets, un-wove them thread by thread (since trying to cut them was a good way to break scissors, although eventually they could trim the thread with his x-Ray heat vision), and then re-wove them into his outfit, re-un-weaving and re-re-weaving as he grew from boy to man.

      At least that was the way they told it back around 1960.

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

    20. Re:Bullet Physics by Anonymous Coward · · Score: 3, Interesting

      What I want to know is how does Superman get a haircut?

    21. Re:Bullet Physics by forgotmypassword · · Score: 2, Informative

      kevlar's great for stopping a bullet, yet if someone tries to stab you, you might as well be wearing denim.

      My Kevlar gloves aren't there to protect my hands from bullets.

      Are you just dead wrong, or is there some big difference here?

    22. Re:Bullet Physics by uvsc_wolverine · · Score: 2, Funny

      Hey! Don't go giving my physics prof. any ideas. I'm having enough trouble without having to worry about the mass of the rope and the friction of the pully. I like massless ropes and frictionless pulleys!

      --
      This space for rent...
    23. Re:Bullet Physics by forgotmypassword · · Score: 2, Funny

      I like massless ropes and frictionless pulleys!

      And spherical cows!

    24. Re:Bullet Physics by Lord+Kano · · Score: 4, Informative

      Are you just dead wrong, or is there some big difference here?

      He's a little wrong.

      Kevlar vests are designed to fail. That's why there are multiple layers of Kevlar. Each layer slows the bullet as it fails. The plan is that before the bullet penetrates your flesh, it gives all of its energy to making the Kevlar fail.

      I have a Kevlar vest and I stabbed the rear panel with a survival knife. No penetration at all, but I have read of police who were shot with broadhead hunting arrows and the vests were only useful to them as big band-aids.

      You're Kevlar gloves aren't uncuttable, they just don't cust as easily as your skin, hopefully you'll get your hand out of the way before the Kevlar in the glove fails.

      LK

      --
      "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
    25. Re:Bullet Physics by qc_dk · · Score: 3, Interesting

      Looking around on the internet i found the energy of a bullet fired by a desert eagle to be around
      1200 J.
      Say i have a hammer weighing 2 kg. To obtain the same energy i would have to swing it at
      sqrt (1200) = 34 m/s or 120 km/h.
      I think this is quite possible.

      With a heavy hammer like a sledgehammer (10 kg) i would only have to swing it at:
      sqrt(240) = 55 km/h.
      This is possible.

      I know because i have just torn down a wall with a sledgehammer. On one of my swings i strafed a pipe and lost my grip on the hammer and it went flying through the 10 cm thick wall rebounded on the next wall flew past me in the other direction and landed 2 m behind me. All in all it flew about 7 m and tore down a 20*20*10 cm piece of cement wall. I am very glad it didnt hit me or my friend who was on the other side of the wall. :)

    26. Re:Bullet Physics by Ba3r · · Score: 2, Interesting

      If the shirt is of tough enough, thin enough fabric, its impact with Superman's super-chest will either 1. deflect it, or 2. mushroom it. Either way there is little as far as penetration of the shirt.

      Now my question is how can Superman pick up a locomotive without destroying whatever he is standing on (i.e. the 500,000 lbs (google) on 2 points *maybe* totaling 1 sqft, so thats about 500,000/144 = 3472 psi). I doubt the surface strength of concrete can take that pressure (Let alone the torque he exerts when he chucks the locomotive 100 miles, or the mere ability to pick up a locomotive by one end, i mean the torque would be ridiculous).

      But i suppose all of Superman's super-feats pale in comparison to Batman's ability to conceal his identity for so damn long.

    27. Re:Bullet Physics by Anonymous Coward · · Score: 2, Funny
      Generally a contrived answer that is self-consistant is better than a simple answer that begs more questions.
      OK. Tiny demons cause all of physics to happen. They made the Universe, too. You can't see them because they move too fast and they're invisible. This explains all of physics without leaving any unanswered questions. Satisfied?
    28. Re:Bullet Physics by Per+Abrahamsen · · Score: 2, Informative

      The mirror was a piece of shiny metal from the space ship that brought him to Earth.

    29. Re:Bullet Physics by Spreetin · · Score: 3, Informative

      His hair don't grow.

      Except in one episode of the comic, where some red Kryotonite makes his hair, nails and beard grow.

      He then needed both Supergirl and Superdog to use their heatsight to cut it off.

      --
      8 * 7 = 42
    30. Re:Bullet Physics by kria · · Score: 5, Funny

      There was actually a joke about the Hulk and his purple pants. (They were always purple in the comic book for a long time.) Anyway, it was in Power Man and Iron Fist. Power Man was superstrong and while I don't think he was invulnerable, he was difficult to damage. Anyway, he favored wearing yellow silk shirts as part of his costume and they were ALWAYS getting torn up.

      One issue he was stopping by to pick up a bunch of yellow silk shirts and they clerk was handing a pile of purple pants to a Dr. Banner. :)

    31. Re:Bullet Physics by Scrameustache · · Score: 4, Funny

      Martha Kent took the kid's baby blankets, un-wove them thread by thread (since trying to cut them was a good way to break scissors, although eventually they could trim the thread with his x-Ray heat vision), and then re-wove them into his outfit, re-un-weaving and re-re-weaving as he grew from boy to man.

      That was before women's lib. Now its all "magical force fields" and none of that opressive sewing and weaving. ;-)

      --

      You can't take the sky from me...

    32. Re:Bullet Physics by Gilmoure · · Score: 3, Funny

      Flattened ovid cows will pack to a greater density in a barrel.

      --
      I drank what? -- Socrates
    33. Re:Bullet Physics by Gilmoure · · Score: 2, Interesting

      I've had a bullet bounce back and hit me at the range (not my shot, someone a couple lanes down). It tore a hole in my jeans (skin tight-still wearing jeans I had in high school, several pounds later), cut open my leg and bounced back into the range.

      --
      I drank what? -- Socrates
    34. Re:Bullet Physics by LuxFX · · Score: 2, Insightful

      he stands there with his chest out smiling as the bullets bounce off. The bad guy empties his gun, and with no other options in front of him he throws the gun at Superman, who then ducks so he doesn't get hit.

      This should be covered in the physics class!

      Dodging bullets aimed at the chest means 1) Superman would have to move his entire body to avoid getting hit in the chest, and 2) Superman would have to move extremely fast to avoid the bullets in the first place. Moving that much mass (Superman must have a lot of mass) that quickly uses a LOT of energy! More energy, it would appear, than it takes to simply absorb the impact of the bullets.

      On the other hand, a gun throw at the head means that 1) Superman only has to move faster than the bad guy can throw (much slower than bullets!), and 2) Superman only has to duck his head instead of move his entire body. This would take very little energy. Less energy, it would appear, that it would take to absorb the impact of the gun on his face (and still maintain his smug smile).

      Superman might be all muscle but he isn't stupid -- he's efficient. He knows better than to waste energy when he might fight the big fight in just a few pages/scenes.

      --
      Punctanym: alternate spelling of words using punctuation or numerals in place of some or all of its letters; see 'leet'
    35. Re:Bullet Physics by voidware · · Score: 3, Informative

      ASTM Grade 1 Titanium:
      E = 103 GPa
      %EL ~ 25 (Ductility)
      Ti is not considered a brittle material (5%EL). It is about the same as a common steel alloy (1020). However, it is 2.5x as strong. It might not shatter, as Lead is much more ductile than either steel or titanium (~30-60%EL).

      Ford

    36. Re:Bullet Physics by Lord+Kano · · Score: 2, Informative

      Oh, and unless your vest is one of the newest military models, a standard FMJ round from a M-16 or AK-47 will go through it. The AK-47 will actually go through both panels - and the wearer - and still have the velocity left to kill someone standing behind you.

      The vests are rated. Level IIA and IIIA are the ones you're most likely to encounter, those will stop 9mm, .38 Special, and the IIIA will stop .357 Magnum. If you can find a level IV vest, that will stop 5.56mm Nato and 7.62x39mm.

      LK

      --
      "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
  5. I took this guy's class. by mr_luc · · Score: 5, Interesting

    I found it very engaging. It was somewhat lightweight, but very entertaining! The U of MN is doing good with this guy.

    However, he mentioned a few superheroes that I've never heard of before -- maybe /. can help me out? Lefsa-Man, The IceFisher, SnowmoBelly . . . maybe these are DC characters?

    1. Re:I took this guy's class. by CheeseTroll · · Score: 4, Funny

      Oh, ja - dey are from de Hall of Lutefisk!

      Sorry - it's late.

      --
      A post a day keeps productivity at bay.
    2. Re:I took this guy's class. by Amiga+Lover · · Score: 4, Funny

      I think he made them up. I wasn't sure how dubious the characters were until he started talking about GravityMan, The Planetaryelectricfield, StrongNuclearForceGirl and Mr.Inertia

      The link between The Combustible and FartBoy was pretty neat, when explaining the hindenberg...

  6. I though otherwise, so did my physics teacher. by 0x1337 · · Score: 5, Interesting

    I remember last year for the mid-year intercession at my high school> , there was a whole week long class devoted to showing the FLAKEYNESS and INCORRECTNESS of comic book physics. Hell - even my Calc-Based Physics Book by Halliday and Resnick from last year had an exercise on p=mv, proving that superman wouldn't be able to just stand there and deflect bullets.

    1. Re:I though otherwise, so did my physics teacher. by Jace+of+Fuse! · · Score: 4, Interesting

      One of my favorite examples of incorrectness is the classical Lois falling from atop the building and Superman, the man of steel, catching her in his arms.

      Since he's the man of steel, she would have been injured hitting his arms just as she would have had she hit the ground, or perhaps some steel structure along the way.

      "Don't worry, I've got ..." **CRACKA-SQUISH** "...your arm."

      --

      "Everything you know is wrong. (And stupid.)"

      Moderation Totals: Wrong=2, Stupid=3, Total=5.
    2. Re:I though otherwise, so did my physics teacher. by TheOnlyCoolTim · · Score: 5, Funny

      Superman isn't an idiot. He knows to match velocities before he catches her.

      Tim

      --
      Omnia vestra castrorum habetur nobis.
    3. Re:I though otherwise, so did my physics teacher. by skifreak87 · · Score: 3, Interesting

      In my high school physics class we watched an instance where superman dove off the top of what I believe was a waterfall to catch someone who was falling. We calculated how high the fall would have to be in order superman to actually have the 5 seconds he wasted before even jumping to save the person (and then we assumed that he jumped downwards to provide himself with more acceleration even though it doesn't look like that's what he did from the movie). The waterfall would've had to have been several times the height of Niagra Falls (I don't remember the actualy height by now but I believe if you walked off the top of Niagra Falls you would have about 2-3 seconds before you hit the water). Talk about movies getting their physics wrong.

    4. Re:I though otherwise, so did my physics teacher. by Anonymous Coward · · Score: 3, Interesting

      Notice that the article is about comic books, not movies.

      In the old spidermans, Peter had a girlfriend before MJ. She was captured by the green goblin and thrown off a bridge like in the movie. Spiderman catches her. She breaks her neck.

      That shapes spiderman's character for a long time. Much, much later he finds out that she was already dead when she fell, but anyway...

    5. Re:I though otherwise, so did my physics teacher. by Jace+of+Fuse! · · Score: 2, Informative

      Superman isn't an idiot. He knows to match velocities before he catches her.

      Is that so? Watch the movie and tell me you honestly think it looks like he matches her velocity. In fact, if memory serves me correctly, he's slowly moving upwards while she says "You've got me! WHO'S GOT YOU!?"

      Like I said. **CRACKA-SQUISH**

      --

      "Everything you know is wrong. (And stupid.)"

      Moderation Totals: Wrong=2, Stupid=3, Total=5.
    6. Re:I though otherwise, so did my physics teacher. by CrowScape · · Score: 3, Insightful

      What I find funny are those instances where a superhero will pick up something like a cruise liner and nothing bad will happen to the structure considering its entire weight is resting on a surface area the size of the hero's palms. Just once I'd like to see a superhero try to save that falling jet and accidentally tear it apart.

      --
      common sense: noun
      What those who are ignorant of the subject matter think; usually wrong.
    7. Re:I though otherwise, so did my physics teacher. by Lehk228 · · Score: 2, Interesting

      Actually a sonic boom is much more damaging to glass than it is to flesh, toss a glass bottle and a piece of steak onto some concrete and see what happens (even better, twist a piece of steak a few degrees and try the same with a piece of plate glass)

      --
      Snowden and Manning are heroes.
    8. Re:I though otherwise, so did my physics teacher. by bluGill · · Score: 3, Insightful

      It is the delta-V that counts though, hitting the ground is more or less instant. A catch, even by a man moving upwards can be executed to slow that down. (Ie start the catch above your head, and slowly decelerate by moving your arms down). Mind there is still a large delta-V at any given instant, but not nearly as large.

      It is left as an exercise to the reader to determin if spreading out the change in this way is enough to save a life.

    9. Re:I though otherwise, so did my physics teacher. by anethema · · Score: 2, Insightful

      He can fly up, defying gravity. I assume he doesnt have to obey gravity to fall.

      --


      It's easier to fight for one's principles than to live up to them.
    10. Re:I though otherwise, so did my physics teacher. by bcrowell · · Score: 4, Informative
      there was a whole week long class devoted to showing the FLAKEYNESS and INCORRECTNESS of comic book physics.
      What are you talking about, dude? I know for sure that all the physics in the Fantastic Four is right -- Reed Richards knows this shit cold, man!

      Hell - even my Calc-Based Physics Book by Halliday and Resnick from last year had an exercise on p=mv, proving that superman wouldn't be able to just stand there and deflect bullets.
      But seriously (well, not so seriously), I have a copy of H&R here (I'm a physics professor). The problem says a gangster is shooting 100 bullets per minute at Superman. Each bullet has a mass of 3 grams, and their speed is 500 m/s. You're supposed to calculate the average force on his chest. The answer is 2.5 N, which isn't even enough to topple my 4-year-old daughter.

      What really rapes the laws of physics is that Superman can fly in violation of Newton's third law (or conservation of momentum, which amounts to the same thing). For instance, when he's coming in for a landing, he just kills his momentum. What's he interacting with? Objects can't make forces on themselves! Whatever mysterious method he has for creating and destroying momentum at will, presumably it also accounts for his ability to stop a jumbo jet without recoiling, etc.

      BTW, Larry Niven wrote a really funny article called "Man of Steel, Woman of Kleenex," about the horrific consequences if Superman was to attempt to have sex with an Earth woman. You can still find it in print -- it's been anthologized.

    11. Re:I though otherwise, so did my physics teacher. by sirsex · · Score: 4, Insightful

      Well, assuming action-reaction, the bullet cannot have any more momentum then the gun does when it kicks against the shooter's shoulder. Therefore the impulse of the bullet hitting you cannot be more then the impulse of shooting same bullet

    12. Re:I though otherwise, so did my physics teacher. by Have+Blue · · Score: 4, Insightful

      Likewise, there's the paradox of heros who have super-strength but not invulnerability (e.g. spider-man). He'd have to have at least some level of increased structural cohesion (and the increased resistance to physical harm in general that accompanies it) just so his super-muscles wouldn't destroy his body when he tenses them, and so he won't be crushed by the car he's holding over his head.

    13. Re:I though otherwise, so did my physics teacher. by AeroIllini · · Score: 2, Interesting

      Hmmm. So when Neo caught Trinity, it would have been like she was getting hit with a Neo-sized rifle bullet. In a best-case scenario, she simply breaks every bone in her body, not counting the bullet wound she got before she was caught. (I'm not sure I want to think about the worst-case scenario-- bug on a windshield, anyone?)

      OK, so she breaks bones in the Matrix. According to Morpheus, "Your body makes it real." So would her bones spontaneously crack as she was sitting in the chair? Aside from the sheer creepiness factor (imagine Link's reaction to the horrible cracking noise) that just doesn't seem possible, even for the diehard mind-over-matter sect. Dying I can see... since as you die, your "mind" -- meaning the thought processes (perhaps soul), not the physical brain matter -- leaves your body. In Neo's case, he floated around the hallway for a bit and then found his way back to his body. Injuries, on the other hand ... you may ache when you wake up, but I find it hard to believe that a bone would spontaneously break.

      On the other hand, if it happened fast enough, Trinity's mind would not be able to comprehend what just happened, and it would be as if it never did. Which is probably what happened.

      --
      For security, the MD5 hash of this message and sig is 09f911029d74e35bd84156c5635688c0.
    14. Re:I though otherwise, so did my physics teacher. by alphaseven · · Score: 2, Informative
      That reminds me, I read somewhere that Superman has the power of telekenesis, but only with things he is touching. Sounds useless but that allows him to pick up things like ships and buses without ripping them apart.

      Good point though, I vaguely recall the hero of Starbrand contemplating lifting a cruise liner to safety but then realizing it would rip apart if he did.

    15. Re:I though otherwise, so did my physics teacher. by Niggle · · Score: 4, Funny

      Better that than Neo breaking the sound barrier (buildings exploding in his wake) and no (additional) damage to Trinity after catching her.

      I think that's not a valid comparison. Inside the matrix, Neo does NOT have super powers in the same sense that superman etc. have. Neo's power is basically that he can manipulate "reality". If he can rewrite one law of physics, why should momentum be an issue? Even Trinity (and Morpheus etc.) could rewrite physics to a lesser extent to enable them to jump huge distances and so on.

      To be honest, the only real question is why he decided to fly rather than say, teleport. Another option might be turning the floor to sponge like in the training leap. The only answers I can come up with are:
      "It generates more tension in the film."
      "Neo is an idiot and never considered the idea."

      As an aside, I've always wondered why he bothered with martial arts once he had discovered his powers. Simple tactics like ramming agents at supersonic speeds would be much more effective. He may have had no choice against agent Smith (something of a special case), but normal agents shouldn't even have made him slow down.

      I think this all goes to prove that you should never let a gamer near dodgy physics. Or dodgy backgrounds. We'll rapidly find a way to exploit the holes.

      --
      - Blah blah blah, missing scientist. Blah blah blah, atomic bomb. -
    16. Re:I though otherwise, so did my physics teacher. by Eivind · · Score: 2, Insightful
      the Matrix uses martial arts for the same reason martial arts works perfectly well alongside machine-guns in the Final-Fantasy series, or any other number of Fantasy/Science Fiction;

      Because it looks cool on film.

      There's no other reason. In the real world calling karate "useless" against attackers with machine-guns is the understatement of the century or something.

      I like the Indiana Jones episode where he is faced by some martial-arts ninja who hops around screams and shouts, waves his hands around menacingly and prepares to attack. Indiana lifts his gun and pulls the trigger once. "Bang". Attacker drops dead. End of scene.

    17. Re:I though otherwise, so did my physics teacher. by rishistar · · Score: 2, Funny

      Given he can change velocity, he must have some sort of propulsion system in order to allow for conservation of momentum. So the question is - what orifices does he use as outlets for his emissions? And on days when he knows he's going to have to go really fast, does he fill up on Baked Beans?

      --
      Professor Karmadillo Songs of Science
  7. Impressive role models by BenSpinSpace · · Score: 5, Funny

    I've always found the physics to be amazing, and something to aspire to. I'm sure everyone has.

    Naturally, it's not possible.

    It's rather disappointing to be among the people on earth that don't have super powers, but I suppose we'll live. The fact is, us comic readers (as well as anime-watchers and game-players) constantly see heroes that seem to know when to do the right thing at the right time. No matter how stupid an anime hero can be, he (she?) always seems to be able to take on 20 enemies at once and see a punch coming a mile away. It's the same sort of thing with this comic book physics stuff. These heroes have super powers and they don't appreciate them the way we would. You know what I mean. If you were Superman, you would totally pick a fight with some big dude, and then punch him in the face. You know you would.

  8. Gets the physics SPOT ON by Amiga+Lover · · Score: 2, Funny

    If the physics are so right...

    Where's superman? spiderman? batman? the xmen? omg. YOU'RE ALL HIDING THEM FROM ME

    scuse while my childhood dreams go down the toilet.

  9. Slashdotted. by ktakki · · Score: 4, Funny

    Faster than a speeding packet! More powerful than a Beowulf cluster! Able to leap tall datacenters in a single click!

    Apparently, the Slashdot Effect is the kryptonite of the net.

    k.

    --
    "In spite of everything, I still believe that people are really good at heart." - Anne Frank
    1. Re:Slashdotted. by leecho · · Score: 2, Funny

      Hmm, now I see why Slashdot's main color is green ;)

  10. Alas by Rhinobird · · Score: 3, Funny

    Alas, they couldn't widthstand the all powerfull Slashdot ray.

    Mirrors anyone?

    --
    If Mr. Edison had thought smarter he wouldn't sweat as much. --Nikola Tesla
  11. Surprising by Anonymous Coward · · Score: 5, Funny

    This principle is also surprisingly evident in "The Simpsons":

    Martin: I would've thought that being hit by an atomic bomb would've killed him.
    Bart: Now you know better.

  12. It's not the physics they bend... by Linux+Thought+Leader · · Score: 5, Interesting

    It's the biomechanics. I love to see superheroes bend the rules of biomechanics and the architecture of the human body. One of the reasons we suck at climbing and bounding around in trees is that our shoulders and wrists are not developed to do so. The freakiest thing you will ever see up close is a gibbon skeleton. I know ole Spidey was using his spider stuff, but you know he needs a sauna and a shiatsu to get the ache out of his shoulders.

    1. Re:It's not the physics they bend... by danmitchell · · Score: 2, Informative

      Here's a gibbon skeleton.

      Daniel

      --
      The problem with God is that he thinks he's Richard Wagner
    2. Re:It's not the physics they bend... by CrowScape · · Score: 5, Interesting

      Actually, it's the other way around. Our shoulders and wrists are not deveolped to climb and bound around in trees because we don't. If we started from a young age, our bodies would adapt. Discovery Channel has a series "More Than Human" and in one episode they examined a girl who was frieghteningly good at climbing darn near everything. Turns out her best friend while growing up happened to be chimp... or something... anyway she of course played with it and, kids being naturally fearless, thought nothing of the heights or falling. As a result her fingers and arms adapted. Quite interesting to find out how maleable the human body can be during its development.

      --
      common sense: noun
      What those who are ignorant of the subject matter think; usually wrong.
    3. Re:It's not the physics they bend... by Koyaanisqatsi · · Score: 3, Informative

      I believe you are talking about Tory Allen. A saw her climbing at Climb-Time/Indianapolis, and oh boy, is that impressive!

      The story about the chimp is true, check the bio, in the above link.

  13. donald duck adventures and the mad chemist by 0xfc · · Score: 5, Interesting

    finally i can talk about comics and not be off-topic!

    In issue 15 of walt disneys donald duck adventures, story "the mad chemist", from 1944 by carl barks.

    a letter arrived from joseph b lambert of the cali institute of tech, pointing out a curious refernece in, "the spin of states of carbenes", a tech article soon to be published by P.P. Gaspar and G.s. hammond in Carbene Chemistry.

    It seems donald's reference to CH2 was years ahead of its time: the existance of this elusive chemical intermediate had not been proven in 1944.

    http://www.uky.edu/Projects/Chemcomics/html/dd_1 5_ 2_c.html
    shows him in action on page 2!

    ah and i found the text i was trying to type out from the actual comic...

    http://www.seriesam.com/barks/detc_wdc0044-x1.ht ml

    god i love comic books.

    flaming carrot is top notch. go bob burden!

  14. Anime by SisyphusShrugged · · Score: 4, Interesting

    An interesting thing along the same vein for readers of Battle Angel Alita (aka Gunnm) "The Physics of Tiphares" http://www.geocities.com/Tokyo/Fuji/7539/phys.html

    Turns out the comic book writers put more thought into it that you would have first thought!

    Although I dont know if I could still believe that superman could fly around the world and turn time backwards...

    Nerdy kid:I'm looking for a Batman for my Batmobile.
    Lee:Who about a nice "Thing" action figure?
    Nerdy kid:Uhh no,I need a Batman!
    (Lee smashes a thing figure into the Batmobile so it's legs are sticking out the floor)
    Nerdy kid:You broke my Batmobile!
    Lee:Broke,or made better!

  15. But the question is... by inertia187 · · Score: 5, Funny
    Does Windows crash at the same rate in comics as it does in the real world?

    "Meanwhile... Microsoft Reports Crazy Three Month Uptimes on Windows 2003!"

    Batman: Robin, take out your BatPDA and boot up PocketPC 2003.
    Robin: Golly gee, Batman, why is everthing BatThis and BatThat? I feel left out.
    Batman: Ok, boywonder, we'll call it the RobinPDA.
    Robin: Holy Bitrate, Batman. That sounds stupid.
    Batman: Ok, then we'll call it the BatPDA.
    Robin: Golly gee, Batman, why is everthing BatThis and BatThat? I feel left out.
    POW! BUFF! THUD!
    Batman: I've always wanted to do that.
    --
    A programmer is a machine for converting coffee into code.
  16. One of the questions in the article by bersl2 · · Score: 4, Informative

    Can the mutant master of magnetism Magneto levitate people using the iron in their blood?

    The iron in our blood is mostly in the hemoglobin, specifically the heme half. Heme is an iron-based complex, in which the iron is IIRC diamagnetic.

    Therefore, I do not see how---oh, wait. I guess I'm wrong. Oops. Looks like I need to review my sigma/pi bondage.

    1. Re:One of the questions in the article by bersl2 · · Score: 2, Insightful

      Consider the density of the cardiovascular system in your body. Any given cell in your body cannot be 4-5 cells away from a blood vessel; otherwise, it'd die; thus the reason for artery (big) -> arteriole -> capillary (small) -> venule -> vein (big) progression (well, that and blood pressure). If all you saw of a person were his vessels, you'd easily be able to identify him.

      Being that dense, the magnetic attraction would be evenly distributed throughout the entire body.

    2. Re:One of the questions in the article by EvanED · · Score: 2, Insightful

      What? Isn't it possible that a much stronger magnetic field would be able to do it?

      From what I can read from your argument, it's close to "if a tiny push from a toddler can't move a car then it can't be pushed at all."

    3. Re:One of the questions in the article by klaasvakie · · Score: 5, Interesting

      Dude,
      Here is a picture of a frog levitating in a 16 Tesla (160,000 Gauss) magnet. According to this page, humans have a similar diamagnetic susceptibility to frogs.
      Thus, if you could apply 16 Tesla or more over the volume of a human, he/she will levitate.

      Cheers,
      Johann

      --
      # ssh -l neo the_matrix; killall -9 agent_smith
  17. Slashdotted by shfted! · · Score: 2, Funny

    Yeah, but does any comic explain the Slashdot Effect?

    --
    He who laughs last is stuck in a time dilation bubble.
  18. this cannot be proven by pyrrho · · Score: 3, Interesting

    proving that superman wouldn't be able to just stand there and deflect bullets.

    you cannot prove what is claimed, you can only set up specification boundaries for exactly what Supermans makeup must be in oder to do it.

    Throw in an infinite amount of strange physics and you have a pointless excersice, and unsuprising. Much better to find the examples where physics was well understood, and promote that.

    --

    -pyrrho

  19. For Further Reference: by RobotRunAmok · · Score: 4, Informative

    "The Science of Superheroes," (Wiley Books 2002) by Lois Gresh and Robert Weinberg (introduction by Dean Koontz). Same duo who brought you "The Computers of Star Trek." Weinberg also wrote "Cable" for Marvel.

  20. Insultingly Stupid Movie Physics by propellor_head · · Score: 5, Informative

    For a different point of view, go to Insultingly Stupid Movie Physics. In particular, check out their write-up on Spider Man.

    1. Re:Insultingly Stupid Movie Physics by SlashdotLemming · · Score: 2, Informative

      For a different point of view, go to Insultingly Stupid Movie Physics. In particular, check out their write-up on Spider Man.

      From the link: The bully end up flying horizontally down a hallway.

      I think the "Insultingly Stupid Website Grammar" guys need to pay them a visit.

  21. Here you go by BlueTrin · · Score: 4, Informative

    'Uncanny physics of comic book superheroes' Posted on Sunday, February 15 @ 16:20:59 EST by bjs

    Can you teach a physics class with only comic books to illustrate the principles? University of Minnesota physics professor James Kakalios has been doing it since 1995, when he explained the principle of conservation of momentum by calculating the force of Spider-Man's web when it snagged the superhero's girlfriend as she plummeted from a great height. "Comic books get their science right more often than one would expect," said the gregarious Kakalios. "I was able to find examples in superhero comic books of the correct descriptions of basic physical principles for a wide range of topics, including classical mechanics, electricity and magnetism, and even quantum physics."



    From the University of Minnesota:

    Professor to describe 'uncanny physics of comic book superheroes'


    Can you teach a physics class with only comic books to illustrate the principles? University of Minnesota physics professor James Kakalios has been doing it since 1995, when he explained the principle of conservation of momentum by calculating the force of Spider-Man's web when it snagged the superhero's girlfriend as she plummeted from a great height.

    Kakalios will describe a freshman seminar class he teaches, "Physics of Comic Books," at 11 a.m. Sunday, Feb. 15, during the American Association for the Advancement of Science meeting in Seattle. His talk is part of the symposium "Pop Physics: The Interface Between Hard Science and Popular Culture," one of two symposia in the Science, Entertainment and the Media category.

    "Comic books get their science right more often than one would expect," said the gregarious Kakalios. "I was able to find examples in superhero comic books of the correct descriptions of basic physical principles for a wide range of topics, including classical mechanics, electricity and magnetism, and even quantum physics."

    Take, for example, the strength of Superman. To leap a 30-story building in a single bound, Superman's leg muscles must produce nearly 6,000 pounds of force while jumping, Kakalios calculates. The Man of Steel was that strong because he was designed to resist Krypton's powerful gravity. But for a planet with an Earth-like surface to have so much stronger gravity, it would need neutron star material in its core--a highly unstable situation. No wonder the planet exploded. Other topics considered in Kakalios' class include:

    # Is it possible to read minds as Prof. X of the X-Men does?
    # If Spider-Man's webbing is as strong as real spider silk, could it support his weight as he swings between buildings?
    # Can the mutant master of magnetism Magneto levitate people using the iron in their blood?
    # If you could run as fast as the Flash, could you run up the side of a building or across the ocean, and how often would you need to eat?

    "Once the physical concepts such as forces and motion, conservation of energy, electricity and magnetisms, and elementary quantum mechanics are introduced to answer these and other questions, their real-world applications to automobile airbags, cell phones, nanotechnology and black hole formation are explained," said Kakalios. "The students in this class ranged from engineering to history majors, and while not all were comic book fans, they all found it an engaging and entertaining way to learn critical thinking and basic physics concepts."

    --
    Don't you know it is now both immoral and criminal to think beyond the next quarterly report?
  22. I wish I had that physics text by foidulus · · Score: 5, Funny

    All my physics text book had(and I'm being completely serious here) was a bunch of drawings of men looking at little girls in short skirts(the worst was when they were describing tension and had a man staring directly at the behind of a 7 year old girl when she was bent over in an elevator), shirtless boys, and monkeys. What wonderful human beings these physists must have been.

  23. Suspension of disbelief considered harmful by RealProgrammer · · Score: 5, Interesting

    I grew up on comics - I still have over 1000 of them from the '70s and '80s, stuck back in a closet, wrapped in plastic.

    What the good Professor says is not that all comic book situations are based in physical reality -- that's absurd. You don't get to teach at a Big Ten university by being a knucklehead.

    He's saying that there are instructive cases, and furthermore that those cases are often the essential ones needed to understand the underlying physics. He's saying that look, this situation that seems like over-the-top unreality is in fact pretty close to the way the universe actually works.

    I give him credit for having the guts to teach that way.

    --
    sigs, as if you care.
  24. Comic Book Physics by Orion+Blastar · · Score: 2, Flamebait

    If I remember correctly it was Krypton's sun that exploded and destroyed the planet, or at least in one version it did. A red sun that went super nova.

    Does Physics provide an answer why pieces of Krypton can harm Superman yet pieces of Earth do not harm Earthlings? ;) Also if Krypton had neutron star matter in its core, how come Kryptonite which came from Krypton's core is not super heavy?

    Also if Superman is unable to be harmed and bullets bounce off of his chest, how come there are no holes in his clothes? Current storyline on Superman had him arrive in a pod with no blankets, so they did not use them to create his costume. Kal-El was a test tube baby and sent to Earth in the ship inside of a pod.

    Also how does Superman lose his strength when exposed to Kryptonite or Red Solar Radiation, if he was exposed to high gravity he still should have his muscles unless they wore out over the years of growing up in a lower gravity environment. Another theory is that his body absorbs yellow sun radiation like a solar cell and he gets his powers from that. Kryptonite or Red Solar radiation apparently discharges that energy.

    Also his relationship with Lois, man of steel and woman of kleenex, need I avoid the details of that intiment relationship should they decide to have children? ;)

    Also how can Clark Kent pass physicals when they cannot even draw blood for blood tests from his arm as it is super hard? Also what about prostate tests, I'd hate to be the doctor who does those. :) Clark Kent is also an illegal alien having not been born on Earth, and obviously any papers saying so must have been forged or are false. So Clark Kent aka Superman is breaking Civil Law by claiming to be a US Citizen. So much for his good image. :)

    Other things I seem to have a problem with:

    Time travel by spinning the Earth backwards, I do not think that this will work and should only cause major earthquakes and other problems.

    Just how many powers does Superman have anyway? They seem to keep on inventing them. Super Ventriliquism, Super Hypnosis, Super Telepathy, Super Accounting, are they just making these up as they go along? Maybe they should rename him as Unclear Man as his powers seem to be Unclear.

    Also they had Superman in space without the need for air. How is this possible? Just how long can he hold his breath and avoid the effects of decompression?

    With muscles that powerful, he should weigh a ton or more. People would be able to notice this as he walks on weak surfaces like wood floors.

    Also how is it possible to disguise yourself by combing out that s-curl, putting on glasses, and changing clothes? Someone with the intellect that Lex Luthor claims to have should be able to see through that transparent disguise, but apparently not.

    --
    Remember, Slashdot does not have a -1 disagree moderation, and no, troll, flamebait, and overrated are not substitutes.
  25. Spider-Man and the death of Gwen Stacy by rusty_razor · · Score: 5, Informative

    Here's an article (pdf) that Kakalios wrote for the Star Tribune. It discusses the simple physics behind a 1973 Spider-Man issue.

  26. Sounds a bit like my super power by Chuck+Chunder · · Score: 5, Funny

    I'm invisible to attractive women.

    As spys/superheros/supervillains always seem to have attractive women as their offsiders I'd be the perfect person to infiltrate their lair.

    --
    Boffoonery - downloadable Comedy Benefit for Bletchley Park
    1. Re:Sounds a bit like my super power by Anonymous Coward · · Score: 2, Funny

      With the user name of "Chuck Chunder", I am NOT surprised.

    2. Re:Sounds a bit like my super power by Anonymous Coward · · Score: 5, Funny

      > I'm invisible to attractive women.

      Strange! I'm attractive to invisible women. :)

    3. Re:Sounds a bit like my super power by Anonymous Coward · · Score: 2, Funny

      And I'm ATTRACTED to invisible women...

    4. Re:Sounds a bit like my super power by Gilmoure · · Score: 2, Funny

      I'm invisible to all women except lesbians. And all they want is a drinking buddy and a shoulder to cry on. Oh well, at least I get to hear about lesbian sex.

      --
      I drank what? -- Socrates
    5. Re:Sounds a bit like my super power by Anonymous Coward · · Score: 2, Funny

      Check the margins of this post for some really HOT PIX.

  27. Re:Hulk and Xmen2 by Anonymous Coward · · Score: 2, Interesting

    The original hulk tv show was bunk as far as hulk powers go :) I didn't care for the movie, but it was true to hulk's abilities from the comic books.
    As for the Cyclops thing, that kinda threw me, but she is telekinetic, so you can make up something about compacting air molecules to refract the light or something :) Or just tell yourself it's plasma and not a laser (in many cases this seems to be the case, as it doesnt ever seem to really go in a straight line)
    Spider-Man I loved except for one thing: Spidey is supposed to be a very sarcastic smart-ass...this didn't show through near enough

  28. Re:Hulk and Xmen2 by momerath2003 · · Score: 4, Funny

    Well, maybe you can't deflect a beam of light with just "Mind Power."

    Because I know I can.

    --
    I had but a simple dream, to destroy all humans.
  29. Original Article by nrlightfoot · · Score: 5, Informative
    --
    what sig?
  30. Re:What is amazing by dann0 · · Score: 3, Funny

    What is physics defying is how fast that server went down when slashdotted. After 5 minutes at 11:30 it was DDoSed to death. Yay slashdot readers! -Chris
    Maybe it means that /. readers are finally reading the article before they post?

    --
    "The big question in our lives is how to be at the same time a hedonist and in a hurry" - Alain Ducasse (?)
  31. Re:Comic Book Physics by AnotherBlackHat · · Score: 4, Funny

    Also his relationship with Lois, man of steel and woman of kleenex, need I avoid the details of that intiment relationship should they decide to have children? ;)


    You don't need to avoid it, but there's little reason to post it here - a link should be enough.

    -- this is not a .sig
  32. Additional article, similar content by rusty_razor · · Score: 5, Interesting

    The U of M's IT magazine Inventing Tomorrow interviewed Kakalios for its Spring 2002 issue. My favorite quote from the lengthy article:

    One of Kakalios' favorite stories acknowledges this leap of faith. "There's a panel in which The Atom and another character have shrunk to submolecular size, and they're sitting on an electron," he recalls with a grin. "The Atom's companion says, 'We're smaller than an oxygen molecule. How are we breathing?' The Atom replies, 'I've never really figured that out.'"
  33. More links and info by Alien54 · · Score: 5, Informative
    Here is an article from Physics today (Nov 2002) that has essentially the same story, but which provides lots of extra links at the bottom, and which is fleshed out much better.

    Also seen on Slashdot here in May 2002, so it's a repeat, but from a while ago.

    --
    "It is a greater offense to steal men's labor, than their clothes"
  34. What was the explosion called? by Chuck+Chunder · · Score: 3, Funny

    Flaming'el?

    --
    Boffoonery - downloadable Comedy Benefit for Bletchley Park
    1. Re:What was the explosion called? by Anonymous Coward · · Score: 5, Funny

      > What was the explosion called? Flaming'el?

      Nah, I'm pretty sure it was "Bloody'el."

  35. Re:xmen by Alcohol+Fueled · · Score: 3, Funny

    You can transfer abilities through touch. If you touch someone hard enough, you'll give them the ability to bleed. :P

    --
    Ah am not a crook! (\(-__-)/)
  36. "Man of Steel, Woman of Kleenex" by Planx_Constant · · Score: 5, Informative

    Larry Niven dealt with a lot of this an essay about why Superman is always free on Saturday night.

    It deals more with biology and psychology, but there's a lot of physics involved, too.

    --
    Heisenberg might have been here.
    1. Re:"Man of Steel, Woman of Kleenex" by freeweed · · Score: 4, Funny

      Niven's essay has always reminded me of a joke:

      Superman is flying around one night, and spies Wonder Woman sleeping through her open window. Well, Superman has Super-speed, so he figures he can be "in and out" before anyone's the wiser. So, he zips in, does his business really fast, and takes off.

      Shortly after, Wonder Woman sits up and asks "what the hell was that?"

      The Invisible Man, lying next to her, sits up and says "I don't know, but damn, does my ass ever hurt."

      --
      Endless arguments over trivial contradictions in books written by ignorant savages to explain thunder in the dark.
  37. Yes, one does! by Alcohol+Fueled · · Score: 3, Informative

    I would think that this comic explains the Slashdot Effect pretty well. :)

    --
    Ah am not a crook! (\(-__-)/)
  38. Human imagination is limited by human knowledge by MMaestro · · Score: 4, Interesting
    Its only natural that comic book physics would be based off real life knowledge on physics. Simply because its easier.

    Sure you could create a program or a chart carefully detailing what the mass and content of the planet is, and then you could find out how much gravity is created, followed by the thickness/thinness of the atmosphere, followed by the way evolution has grown on the planet (such as a world where the majority of land mass is earth rather than water), etc etc.

    Or you could just reach for a high school physics book and base your comics on simple, easy to understand and apply physics. Its common to see this in everything from novels to video games. (We're playing video games that are supposed to take place in hundreds of years in the future where portable handheld rocket launchers can reload in less than 2 seconds and interstellar travel is possible, but we're still using a bread-and-butter assault rifle and grenade launcher attachment as our main weapon. Wheres the laser beam weapons? The jetpacks? The microwave guns? The robot armies? The pistol sized one shot super gun? A version of Windows which doesn't crash... ok maybe thats a little too imaginative.)

  39. Re:Hulk and Xmen2 by RodgerDodger · · Score: 4, Insightful

    you CAN'T deflect a beam of light with just "Mind Power!"


    But (assuming you buy into her power of telekinesis in the first place) you could cause the air to act as a natural lens or mirror, causing the beam to be distorted and deflected...
    --
    "Software is too expensive to build cheaply"
  40. But... by mokiejovis · · Score: 4, Funny

    How about when Lois Lane falls from a building (accelerating at 9.2 m/s^2), and Superman zooms up (accelerating at, oh, let's say, -30 m/s^2 relative to Lois) and catches her, soaring off into the wild blue yonder. This leaves Lois instantaneously changing directions from +9.2 m/s^2 to -30 m/s^2, with a delta of -20.8 m/s^2.

    Wouldn't she be better off just hitting the pavement?

    1. Re:But... by mdielmann · · Score: 2, Informative

      The delta is 39.2 m/s^2. Don't believe me, make a scale on graph paper and count the little blocks. And yes, we'd have all been better off if Lois hit the pavement once or twice.

      --
      Sure I'm paranoid, but am I paranoid enough?
  41. Very creative, but... by NaCl · · Score: 3, Interesting

    From the pratical point of view, not every physics student will have enough knowledge of comics. So imagine someone not learning physics because of a, hmmm, calculus issue, but because he/she doesn't read enough comics!

    --
    I shot the sheriff
  42. Re:Hulk and Xmen2 by CrowScape · · Score: 2, Interesting

    I've only seen the previews of the Hulk movie, but with the tank, IIRC, the hulk grabed the turret and swung the thing around? I really wanted to see the body suddenly fly off, leaving the Hulk only holding the turret, as, again, IIRC, tank turrets are held in place simply by gravity.

    --
    common sense: noun
    What those who are ignorant of the subject matter think; usually wrong.
  43. Re:xmen by Lehk228 · · Score: 2, Interesting

    the blades are adamantine (i think i got the metal right.... sure as hell isn't steel) and blades sharp enough down to an atomic level wouldn't need alot of force.

    --
    Snowden and Manning are heroes.
  44. Green Lantern Light by buckhead_buddy · · Score: 4, Funny

    I think my difficulties at understanding my electromagnetism classes were partially because of my preconceptions caused by my understanding of light from Green Lantern comics.

    Light can be both a particle and a wave... and a big boxing glove or baseball bat depending on the controlling thoughts.

    Quantum mechanics dictates that the observer can effect the observed... but only if you have a ring on your finger, otherwise you'll just get your head beaten in by a big green boxing glove or baseball bat.

    Color can be emissive (from the light wavelength itself) or reflective (from interacting with something it hits)... but nothing will change, interact, or stop green light unless it happens to be yellow.

    The perception of color itself is really just an evolved way humans measure different wavelengths of light but there's nothing particularly special about the range of light we see... except that we can see the two most useful wavelengths: green and yellow.

    It's been a while. I don't read Green Lantern nor perform emag calculations so perhaps I've misstated something from continuity or text. C'est La Vie.

  45. Some simple answers... by Spuffin · · Score: 4, Interesting
    Disclaimer: Some/all of this information may be false.
    Does Physics provide an answer why pieces of Krypton can harm Superman yet pieces of Earth do not harm Earthlings?
    Kryptonite affected all people on Krypton so they were, in a sense, just like earthlings. They did not have super powers because the kryptonite kept them normal.
    Clark Kent is also an illegal alien having not been born on Earth, and obviously any papers saying so must have been forged or are false.
    Ma Kent claimed him as her child, and since they lived in the country, were never questioned about it. So all records would be based on good faith
    Just how many powers does Superman have anyway?
    He didn't have an instruction manual in the pod. No one on Krypton had any super powers because of the kryptonite, so he doesn't know what he can do and sometimes discovers latent powers.
    With muscles that powerful, he should weigh a ton or more. People would be able to notice this as he walks on weak surfaces like wood floors.
    He can fly, remember? He just cancels out all but about 190-200lbs.

    The answer to all the other questions are this: He's Superman
  46. Re:My high school physics teacher made us do this by boobsea · · Score: 2, Insightful

    Whatever happened to reading the book and applying the concepts?

    Its this "creativity" bullcrap I have to put up with in high school that is retarding my education. Instead of giving me points for effectively showing knowledge of and applying the concepts, I get points deducted for not having neat cutesy skits, posters, etc.

    They don't hand-hold you in university, why should you be hand-held in high school?

  47. Worst. Link. Ever. by njan · · Score: 2, Funny

    wow. Even a thread link has been slashdotted. '403.9 too many users..'

    Your last link was without doubt the worst slashdot post ever. Rest assured that within minutes I was on slashdot registering my disgust throughout the thread ;)

    --
    I am a viral sig. Please copy me and help me spread. Thank you
  48. Conservation of angular momentum by EnterpriseNCC-1701 · · Score: 2, Funny

    Since when does Superman obey the laws of the conservation of angular momentum??

    --
    "Most interesting how often you humans seem to obtain that which you do not want" -Spock
    1. Re:Conservation of angular momentum by Anonymous Coward · · Score: 2, Funny

      Since when do horny 13yearolds give a shit?!?

  49. Re:Hulk and Xmen2 by forgotmypassword · · Score: 4, Insightful

    Actually most all telekinetic abilities are impossible.

    Pushing something with your brain completely violates Newton's 3rd law. You would have to explain where the equal and opposite force is.

    If Yoda is holding a spaceship up in the air, then there is a mighty big weight pushing down somewhere ... If it were on Yoda, then it would crush and kill him. If it weren't on Yoda, then that really complicates things, because now you have a 3 way interaction between the spaceship, Yoda, and the mysterious point in space that is "really" doing the pushing!

    Oh and don't think that Magneto's E&M powers can skirt around this. E&M conserves energy-momentum too. You can't do work from nothing.

  50. Man of Steel Woman of Kleenex by Alien54 · · Score: 4, Interesting
    Larry Biven has an excellent analysis on the difficulties of of the the physics of beingfg superman, called Man of Steel, Woman of Kleenex which is both a good read, and funny as well.

    For example

    What turns on a kryptonian? What arouses Kal-El's mating urge? Did kryptonian women carry some subtle mating cue at appropriate times of the year? Whatever it is, Lois Lane probably didn't have it. We may speculate that she smells wrong, less like a kryptonian woman than like a terrestrial monkey.

    Can human breed with kryptonian? Do we even use the same genetic code? On the face of it, LL could more easily breed with an ear of corn than with Kal-El. But coincidence does happen. If the genes match...

    --
    "It is a greater offense to steal men's labor, than their clothes"
    1. Re:Man of Steel Woman of Kleenex by Trikenstein · · Score: 3, Interesting
      Philip Jose Farmer's The Wold Newton Universe has its own take on Superman.

      He's more like the Golden Age Superman, leaps instead of flying, not nearly as strong.

      And the Kryptonians are a genetically modified branch of humanity.

  51. Here's a couple I really want to know by xant · · Score: 5, Interesting

    His class covers other topics such as these, that I'd really like to know the answers to:
    # Is it possible to read minds as Prof. X of the X-Men does?
    # How much does Flash have to eat?

    The second one I'd like to know because I figured out, when I was a kid, how much a regenerating troll would have to eat. (Yeah, I'm a computer geek *and* a dungeons and dragons geek.) Basically it works out that even if they're eating pure sugar, there's not enough hours in the day for them to do that.

    The Professor X one is interesting because I took a psychology class in which the professor told us in no uncertain terms why telepathy was impossible. He went into the mechanics of information processing in the brain and the differences between patterns in two different brains, and concluded based on this set of facts that even if you could detect the signal generated by someone else's brain, you wouldn't be able to parse it.

    To me this was preposterous, and I defended my position (unconvincingly, at the time) during his office hours. Signal processing is signal processing, and it doesn't matter whether the signal generated by the receiving station has any relationship with the signal generated by the sending station, as long as the receiver can process it. The human brain's ability to process the signal generated by the human mouth is probably not significantly more complex a task than the hypothetical ability to process the brain signal. You're not, after all, trying to glean the meaning of every nerve firing, just see what the person is thinking about. In a very real sense this is only a step away from what the person is saying, so why would the signal be more difficult to parse than human speech?

    In my mind the only question remaining is whether there is any signal to be processed at all. I say that because you can detect the brain signal without drilling a hole in a person's head, that it is there to be detected, it's just a matter of having sufficiently sensitive equipment to detect it. Does the brain have this? Hard to say.

    I want to know what conclusion the prof reaches.

    --
    It's rare that you're presented with a knob whose only two positions are Make History and Flee Your Glorious Destiny.
    1. Re:Here's a couple I really want to know by alphaseven · · Score: 2, Funny

      And what I'd like to know is, how can Xavier read the mind of someone who first language isn't English? I'd like to see a comic character say "I can read his thoughts, unfortunately they're in Chinese."

    2. Re:Here's a couple I really want to know by Kelmenson · · Score: 4, Interesting
      Your comment is basically the same as my attitude against Searle's Chinese room argument. Quickly summarising, he says that if you had a book that gave you rules on how to convert seemingly random symbols to other seemingly random symbols, that get converted to Chinese, nobody would say the book understands Chinese. And if you get so good at following the book's rules that you don't need the book, you still don't understand Chinese, just the random symbols.


      My attitude on that was that it was a silly analogy, because if I were given the raw impulses going on in my brain I wouldn't be able to decipher it, yet clearly my brain can. Would Searl say my brain knows more than I do?


      This seems to be the same as the telepathy issue: Sure, given a printout of the impulses you couldn't figure it out, but if somehow you could map someone else's impulses onto your brain, it seems quite likely that the brain would figure out what to do.

    3. Re:Here's a couple I really want to know by Mike+A. · · Score: 2, Insightful

      Right on. I don't find Searle's rejoinders to some of the counterarguments - especially his rejoinder to the Systems Reply - particularly convincing. If I were to memorize the book, I would actually be an entity which understands Chinese - it's just that there's no way to communicate, except by way of an interpreter, between the mind I think of as "me" and the mind which speaks Chinese. Just like you, as you point out, have no direct understanding of the neurons firing in your head.

      --

      --
      Do I look like I speak for my employer?
  52. Re:Comic Book Physics by Kirsha · · Score: 2, Informative

    Does Physics provide an answer why pieces of Krypton can harm Superman yet pieces of Earth do not harm Earthlings? ;)

    There ARE pieces of Earth that harm Earthlings, like plutonium, uranium, etc, etc. You could say we got it worse than Superman. He only has to worry about kryptonite. We have to watch out for several elements that could kill/harm us!

  53. Blame Canada! by AndroidCat · · Score: 3, Funny
    Going back a step or two, since Joe Shuster, half of the team that created Superman, was born in Toronto, at least half of the fault for Krypton's explosion can blamed on Canada.

    (Although Cleveland, Ohio definitely catches a lot of that too.)

    --
    One line blog. I hear that they're called Twitters now.
  54. Forget bullets -- physics of superhero sex by devphil · · Score: 4, Funny


    In one of the most hilarious short science essays ever written, Man of Steel, Woman of Kleenex, Larry Niven tackles the problem of how Superman is going to reproduce.

    For example, during orgasm, one loses control of one's muscles. Superman has been known to leave fingerprints in steel and concrete accidentally. What happens to Lois while she's in his arms?

    Another example, which I'll quote directly:

    Ejaculation of semen is entirely involuntary in the human male, and in all other forms of terrestrial life. It would be unreasonable to assume otherwise for a Kryptonian. But with Kryptonian muscles behind it, Kal-El's semen would emerge with the muzzle velocity of a machine gun bullet.

    Followup scenarios (for artificial insemination) assume that he's on an airless moon, to prevent the semen from exploding into vapor due to air friction at supersonic speeds. It eventually turns out artificial insemination doesn't work either.

    --
    You cannot apply a technological solution to a sociological problem. (Edwards' Law)
  55. Re:Hulk and Xmen2 by evilad · · Score: 4, Interesting

    If you stipulate that it is possible for Yoda's brain to remotely exert a force on the spaceship, then it should also be plausible that Yoda can similarly cause his _surroundings_ to remotely exert a force on the spaceship.

  56. Misread by quinkin · · Score: 2, Funny
    Did anyone else (mis)read it as: "Comic Book Guy Physics"???

    I had visions of algorithms used to model the cyclic tidal ripples of fat, a sweat/clothing border distribution theorem, statistical analysis of taco/time samples, and linear regression of "Worst ever" comments with respect to Bart displacement.

    Q.

    --
    Insert Signature Here
  57. Superman and his powers by gcore · · Score: 2, Insightful

    Superman, while on earth, can hear someone scream on a spacestation beyond jupiter. He can blow out stars while caughing. He can travel several tousand time the speed of light. He can fool people he is a completely different person with just a pair of glasses. What kind of physics can explain that?

  58. Re:xmen by The+Only+Druid · · Score: 2, Informative

    They're adamantium. Adamantine is a real english word that means essentially to have the qualities of a diamond (i.e. its strength, in particular) while adamantium is a fictional alloy that is extremely rare in Marvel comics, and apparently extremely difficult to handle (only Weapon X has reliably manipiulated it besides Magneto), although its trailed by Carbonium (i.e. the coils that Omega Red has) which is easier to find/manipulate but less ...adamantine.

    --
    "Stumble before you crawl"
  59. I took this course by aarku · · Score: 5, Informative

    This is what is called a "Freshman Seminar" which is a 2-3 credit class (this one was 2) just to get you comfortable with talking to professors and crap. It's not supposed to be all that serious. I also took "Science of Space Travel", and got an easy A but learned quite a bit. Both were fine classes, U of M is a good school.

  60. quantum physics... by dnahelix · · Score: 3, Funny

    is so Bohr-ing.

    hyuk-hyuk

    --
    Slashdot Eds Link Anonymous Posts With Logged Posts
    They Are Vermin Feeding On Each Other's Feces.
    I Hate \.
  61. physics at the U of MN by atlasheavy · · Score: 3, Interesting

    having suffered through Physics for Engineers 1 and 2 at the U of Minnesota three years ago, I only wish I had been able to take this class; that would've made the whole experience just a wee bit more enjoyable. oh well. At least I showed up often enough to my classes to still get my computer science degree...

    --

    iRooster, the Mac OS X a
  62. Re:Hulk and Xmen2 by forgotmypassword · · Score: 2, Informative

    I won't pick at you for not reading, but I am quite ashamed that the moderators didn't read.

    If you stipulate that it is possible for Yoda's brain to remotely exert a force on the spaceship, then it should also be plausible that Yoda can similarly cause his _surroundings_ to remotely exert a force on the spaceship.

    I wrote that right here

    If it weren't on Yoda, then that really complicates things, because now you have a 3 way interaction between the spaceship, Yoda, and the mysterious point in space that is "really" doing the pushing!

    In this scenario, "Yoda's surroundings", the mysterious third party, would be doing all of the physical work and not Yoda himself. That seems very convoluted to me.

    I am going to drift off into something I didn't previously discuss.

    In that example Yoda makes the spaceship and the ground repell. It couldn't be the air or water, because they would move away and that would be too slippery, or there would be lots of noticable wind/current. You could also argue that Yoda uses a whole bunch of air, but I'm not going to get into that right now. So lets just say that Yoda makes the spaceship and the ground repell.

    Now in another situation where an older Luke creates a pocket of air to surround himself in the middle of space, he would have to be making air attracted to air on opposite sides of himself, or air attracted to himself.

    So we have this mysterious force that can attract or repell, it's a relatively long ranged force, and the energy levels are pretty dang low. It has to be E&M, there really is no other choice. From here things get an order of magnitude more fucked up, but I will stop for now.

  63. Re:Does this mean by corbettw · · Score: 5, Funny

    Yes, yes it does. In fact, I suggest you try this at your first opportunity. Just remember, the webbing you shoot from you wrists may be very fine. So you may not see it, or even feel it. But trust me, it is there, so go ahead and jump off the ledge and start swinging.

    --
    God invented whiskey so the Irish would not rule the world.
  64. minimum mass of Krypton! by David_Shultz · · Score: 5, Interesting
    Pieces of kryptonite are found scattered about the planet. We are told these are shards from the destruction of Krypton. If we assume that the shards were evenly distributed in all directions, we can determine the minimum size the planet Krypton must have been.

    First off we need the distance. Let's assume Krypton circled the nearest star to our own (we are looking for the minimum size of Krypton). Proxima Centauri (or Alpha Centauri C) is only 4.22 light-years away. (393 927 289 812km)

    Imagine a sphere whose radius extends from where the planet Krypton used to be, to the earth. The surface area of this sphere represents the 3-d area across which the shards of kryptonite were distributed. This sphere has a surface area of 4.87508x10^23km(standard calculation).

    The earths radius represents a fraction of this total surface area. The earths radius is 6.3781 x 10^3km. multiply by pi to get the area (the area is 2-d -ie not squared- because the surface of a sphere is 2-d). The next step is comparing this 2-d surface area to the surface area of the imaginary sphere we got above. The result: the earth represents a TINY 4.110086 x 10^-18% of the surface area of our Krypton-explosion sphere. If we multiply the amount of kryptonite on earth by the inverse of this number, we get the amount of Krypton that is scattered around the entire surface area of the sphere.

    And how much kryptonite is on the Earth? damned if I know, so let's just estimate based on what we know of the series. It's been made into various weapons and devices, been sold over the blackmarket, been hidden in secret storage areas, been acquired by every evil organization or villian ever, so presumably the amount on Earth is quite high. BUT, we are calculating for a minimum size of Krypton, so we'll estimate low. 10kg seems more than fair. Now, 2/3 the Earths surface is water, and i haven't heard of any kryptonite being recovered from undersea explorations, so that 10kg found on earth was the 1/3rd that hit the land. So, 30kg hit the Earth. Also consider burning up on reentry. I don't know of kryptonite being indestructible, and it has been made into a liquid at least once in Superman history. Its Probable that at least 90% was burned up in reentry. (If someone with more precise figures and re-do calcs t'would be appreciated). so, the 30kg that hit the earth represents only 10% of the 300kg that hit the atmosphere.

    multiply this by the inverse of this by the inverse of the fraction that represents the surface of our Krypton-explosion sphere over our earths surface area sphere. The result: The planet Krypton weighed an absolute minimum of 7.299x10^19kg. By comparison, our sun weighs 2x10^30kg.

    1. Re:minimum mass of Krypton! by Pentagram · · Score: 3, Insightful

      The earths radius represents a fraction of this total surface area. The earths radius is 6.3781 x 10^3km. multiply by pi to get the area (the area is 2-d -ie not squared- because the surface of a sphere is 2-d). The next step is comparing this 2-d surface area to the surface area of the imaginary sphere we got above. The result: the earth represents a TINY 4.110086 x 10^-18% of the surface area of our Krypton-explosion sphere. If we multiply the amount of kryptonite on earth by the inverse of this number, we get the amount of Krypton that is scattered around the entire surface area of the sphere.

      What about the effect of the Earth's gravity?

  65. Tori Allen by koshimetsu · · Score: 2, Informative

    More Than Human eps. 3, on Oct. 17 2003.

  66. Re:Plot device-Short-changed. by Lord+Kano · · Score: 2, Funny

    Does that mean Superman was circumsized?

    Would they have to use a Kryptonite Mogem clamp?

    --
    "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
  67. Telepathy or brain wiping? by benwaggoner · · Score: 4, Interesting

    But if you put someone else's impulses on your brain, wouldn't you become them?

    Telepathy is basically an emulation problem. Even if there was some way of extracting the neural state of someone else's brain, what would you do with that information?

    What you're suggesting is that you would have enough brain-power (fuzzy concept) to emulate someone else's mind, AND be able to interpret that emulation in some fashion. Assuming you're both human, how would that work?

    And what would a telepathy actually perceive? Someone's sub-vocalized self-commentary? An echo of how they're feeling. Drill deep, and you'll realize you really don't have much of an idea of what telepathy would actually be like.

    Heck, it's not like our own self-awareness is much beyond post-hoc justification.

  68. this is a waaaay old dupe by blargorama · · Score: 2, Informative

    Does anybody search for dupes beyond the past week? This was posted to Slashdot in May of last year. http://science.slashdot.org/article.pl?sid=02/05/1 0/1827244&mode=thread&tid=133

  69. bollix by CAIMLAS · · Score: 2, Interesting

    I don't remember who said it, but there's a saying, "Given enough steps, anything can be proven."

    I think this applies. Consider the physics of someone like the Hulk - as he grows, his strength -must- grow exponentially, simply to be able to deal with his larger body mass. Not proportionately.

    --
    ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  70. Superman is a redneck?? by twoslice · · Score: 2, Funny
    Yes, and the only Living thing he could reproduce with was his cousin Supergirl

    So let me get this straight then. Superboy was the product of Superman and his cousin Supergirl getting it on? - shades of the Ozarks...

    --

    From excellent karma to terible karma with a single +5 funny post...
  71. For the physicists among us... by killermal · · Score: 2, Funny
    Batman: Quick Robbin! Through the Tunnel!

    Robin: \psi_1=A{\rm e}^{ikx}+B{\rm e}^{-ikx}, \psi_2=C{\rm e}^{ik'x}+D{\rm e}^{-ik'x},\psi_3=A'{\rm e}^{ikx}

  72. Because it requires our past experiences... by PhotoGuy · · Score: 4, Interesting
    In movies, the producers can play fast and loose with physics, because they have the benefit of motion and sound, to make things seem more plausible (if only slighly plausible, to someone who understands basic physics logically).

    In comic books, being still frames with no sound, any action, motion, sound, can be implied, but it's really up to our imaginations to create the vivid scene that is real to life; and we do that with the feel for real world physics that we experience in real life. I would guess that this has something to do with comic books tending to be a bit more realistic; so they can leverage our own experience with the physics of the world, for a more realistic and vivid experience.

    --
    Love many, trust a few, do harm to none.
  73. Favorite 'bad physics' moment by Garg · · Score: 3, Funny

    Likewise, there's the paradox of heros who have super-strength but not invulnerability (e.g. spider-man).

    Yep, this brings up one of my all-time favorite roll-your-eyes scenes, from a Superman in the 70's.

    Some doofus found a magic flute which stole Superman's powers, one at a time, and transferred them to himself. So he takes away Supe's flight and invulnerability. When Superman catches up to the doofus, he still has his super-strength, so he bursts through a brick wall.

    Now, I'm no physicist, but I know if I could somehow move my arms with enough force to smash through a brick wall, I'd end up with a pair of stumps and something resembling bloody jelly.

    Garg

    --
    Garg
    Alumnus, Xavier's School for Gifted Youngsters
  74. That's nothing, this gothiloli teaches CPU design. by fuggsy · · Score: 3, Interesting

    My collegue has this book "CPU no tsukurikata", or "How to create a CPU". The lovely Japanese gothic lolita manga character guides you through breadboarding a CPU with descrete components.
    http://cdn-images.amazon.com/images/P/4839909865.0 9.LZZZZZZZ.jpg
    (japanese amazon page for the book http://www.amazon.co.jp/exec/obidos/tg/detail/-/bo oks/4839909865/249-8715141-2165156)

  75. Wyle E. Coyote! by RayBender · · Score: 3, Funny
    My favorite is the "Mobius Wall"; our hero looks around this wall and sees a tail. He puts a stick of dynamite under it, then too late realizes it's his own... :) A great demonstration of non-Euclidean geometry.

    The rest of the Wyle E. Coyote ones are just as good. 'Though I don't think he handles momentum in a physically accurate way, he does have an engineers' appreciation for Murphy and His Laws...

    --
    Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
  76. Re:The slow blade... by nounderscores · · Score: 2, Funny

    OSX: Kosciusko *MS* USA

    now that's ironic

  77. ducking the gun by nounderscores · · Score: 4, Funny

    One more explanation:

    Superman would duck the thrown gun because just standing there like a doofus while a pistol bounces off your forehead looks stupid.

    Even superheros who pretend to be mild mannered reporters have their pride, ya know?

  78. Re:That's nothing, this gothiloli teaches CPU desi by SuiteSisterMary · · Score: 2, Interesting

    In Japan, you'll find Manga for everything from world history to automobile repair. It's just one of those things.

    --
    Vintage computer games and RPG books available. Email me if you're interested.
  79. wrong by portscan · · Score: 2, Interesting
    Take, for example, the strength of Superman. To leap a 30-story building in a single bound, Superman's leg muscles must produce nearly 6,000 pounds of force while jumping, Kakalios calculates. The Man of Steel was that strong because he was designed to resist Krypton's powerful gravity.

    This is wrong. Superman is as strong as he is because of the yellow sun of the Earth (as opposed to the red sun of Krypton). The comics say nothing about how massive the planet is, just that the Earth's sun gave him super powers. Plus, he is not really jumping, he's flying. This description does not lend itself to description by the laws of physics, but that's okay.

    Most phenomena in comic books is completely wrong according to the laws of physics (the law of conservation of energy is the most often flauted--with energy fields being created spontaneously, and the law of conservation of momentum is violated every time somebody flies without any means of propulsion).

    We like comics because they are fantasy. Even if you can find some accurate depictions of physical phenomena in comics, it is a dangerous enterprise to use comics to teach physics. If students are taught that some "comic book physics" is accurate, then they may come to believe that all such physics is accurate.

    For a dose of semi-reality in comics, I turn to Batman, the most bad-ass human ever to be dreamed up. But even Batman is not that physically accurate. The first time he shot up a grappling hook to save him from falling off a building, his arms would be ripped clean off. But I don't care. Batman is cool.

    In my opinion, physics should stay away from comics, because thinking about the physics involved in comics makes them not fun, since nearly every cool thing that happens in comic books defies the laws of physics.
  80. Re:That's nothing, this gothiloli teaches CPU desi by fuggsy · · Score: 2, Interesting

    It ain't manga, it's looks somewhere between a hobbyist book and serious text, not that i could read it beyond the diagrams. All i know is that cute gothiloli chick is the sensei, and she's the first thing that came to mind with the article title "Comic book characters teach physics" :)

  81. The most common comic physics error... by tgibbs · · Score: 3, Interesting

    ...is the failure to understand weight, gravity, and balance. Very often, one sees a "superstrong" character lifting, say a truck, by grabbing it at one end and picking it up. But no matter how strong you are, if you are going to lift something, the combined center of gravity of the object plus you has to be be between your legs, or you will fall over. So you might be strong enough to carry a truck if you were underneath it, but no matter how strong you were, you couldn't pick it up from one end unless you were considerably heavier than the truck itself. Superman, by the way, is presumably an exception to this, since he is apparently immune to gravity--so he could probably lift a big weight from one end by "flying downward". A classic older cover drawing of Superman, back when he couldn't fly, but only "leap tall buildings," showed him lifting a car "realistically"--over his head like a weight lifter.

    A related error is an unrealistic notion of the strength of materials. You can't pick a car up by the bumper; it will just break off.

  82. Re:That's nothing, this gothiloli teaches CPU desi by SuiteSisterMary · · Score: 2, Interesting

    But it is manga. It's a textbook in manga form, and it's common. For example, "Introduction to the Japanese Economy."

    Information manga exploiting the illustrative function of the manga form to serve as study aids for children have existed since before the Second World War. With the extraordinary development of manga as an expressive form during the 1970s, so-called "academic manga" began to appear in general magazines mostly read by businessmen. They do not necessarily have a narrative structure, but the protagonists are shown applying themselves to the study of the origins of and various anecdotes about food, liquor and annual festivals.

    It was in this context that A Manga Introduction to the Japanese Eco nomy appeared in 1986. Unlike most manga in Japan, this work was released not in serialization but in book form from the start. Nonetheless, its three volumes sold a million copies, and it was even read by people born before the war. In this way even those who had previously shown no interest in manga and who did not belong to the so-called "manga generation" were compelled to recognize the expressive power of the manga form.

    This led to the appearance of ever more manga dealing with subject matter such as history, science, and classical literature. At the same time, manga even began to be employed as a public relations tool by governmental agencies. As a whole this new category of manga began to be referred to as "information manga," "expository manga," or "textbook manga." In some cases, they were referred to, with some measure of irony, as "educational manga for grown-ups."

    From http://www.dnp.co.jp/museum/nmp/nmp_i/articles/man ga/manga2-1.html

    --
    Vintage computer games and RPG books available. Email me if you're interested.
  83. Other Questions by yerfatma · · Score: 2, Funny
    There has to be more than just Superman. He's boring (except for that Red Son trade paperback-- that was solid).
    • Is Captain America's undentable, energy-absorbing shield possible (I think it's made of vibranium, unless that's the one the Black Panther gives him when he's just The Captain and is only kinda unbreakable)?
    • How far can Reed Richards, Plastic Man, et al strech before they would run out of material?
    • What's the average tumor size of a Marvel Hero from the '60s?
    • Isn't it more likely Max Cassidy (aka Electro) would have been killed than turned into a master of electricity (speaking of which, do you think the actor who played a similar role in Misfits of Science still calls Courtney Cox looking for jobs)?
    As for stand-up comedians on the topic, I think Dave Chapelle's line about Wonder Woman's trusth lasso ("Damn you got some big titties!") is the best recent stuff.
  84. YOU SAID "Jehova"!!!!! by free_badger · · Score: 2, Funny

    Stone 'im!!! ... Are there any women here?

  85. True, true. by David+M.+Sweeney · · Score: 2, Funny
    If you were Superman, you would totally pick a fight with some big dude, and then punch him in the face. You know you would.

    Two men are drinking in a bar at the top of the Empire State Building. One turns to the other and says: "You know, last week I discovered that if you jump from the top of this building, by the time you fall to the 10th floor, the winds around the building are so strong that they carry you around the building and back into the window."

    The Bartender just shakes his head in disapproval while wiping the bar.

    The 2nd Man says: "What, are you a nut? There is no way in hell that could happen."

    1st Man: "No, it's true, let me prove it to you." So he gets up from the bar, jumps over the balcony, and careens toward the street below. When he passes the 10th floor, the high wind whips him around the building and back into the 10th floor window and he takes the elevator back up to the bar.

    The 2nd Man tells him: "You know, I saw that with my own eyes, but that must have been a one time fluke."

    1st Man: "No, I'll prove it again!" and again he jumps and hurtles toward the street where the 10th floor wind gently carries him around the building and into the window. Once upstairs he urges his fellow drinker to try it.

    2nd Man: "Well, what the hell, it works for you, I'll try it." He jumps over the balcony, plunges downward, passes the 11th, 10th, 9th, 8th floors ... and hits the sidewalk with a splat.

    Back upstairs the Bartender turns to the other drinker: "You know, Superman, you're a real asshole when you're drunk."

  86. Re:Hulk and Xmen2 by Wolfrider · · Score: 2, Funny

    --Thank you for the suggestion. Half a moment...


    ]READY
    $ export TARGET="disbelief-suspensors"
    ]READY
    $ time pahse-three diagnostic
    * SYNTAX ERROR *
    ]READY
    $ time diagnostic (phase3

    (whirling doodad)

    ] Diagnostic complete for disbelief-suspensors. == Results: INCONCLUSIVE.
    real 1m38.782s
    user 0m0.180s
    sys 0m0.050s

    ]READY
    $ _

    --
    .
    == WolfriderV6 == I'm willing to admit that *I just might* be wrong... Are you??
  87. Re:Does this mean by pipingguy · · Score: 3, Funny

    the webbing you shoot from you wrists may be very fine. So you may not see it, or even feel it. But trust me, it is there, so go ahead and jump off the ledge

    Tom and Clark were standing on the roof of their building drinking a few beers on their break and Clark said, "Hey Tom, did you know that if you jump off this building, after you get down so far, a draft will pull you back inside the building on the third floor?"

    "Get outta here," said Clark.

    "No I'm serious, watch me."

    Clark hopped off the building and sure enough, he was taken in by the draft at the third floor window. He took the elevator back to the top and Tom and a security guard that arrived were standing there, Tom in awe.

    "I can't believe it." Said Tom.

    "I know you should try it Tom."

    So Tom hopped off and plunged into the ground.

    "Superman, you're a real asshole when you're drunk." said the security guard.

  88. wrap-up by falsification · · Score: 3, Interesting
    The thread is wrapping up. Unfortunately, a whole bunch of posters found it necessary to make off-topic comments. If you want to see lots of discussions of Manga, animated television shows, movies, and other boring stuff, read the whole thread.

    The topic is supposed to be comic books and physics. Comic books are a much-maligned, yet fascinating form of art. The conjunction of art and science should have made for a fascinating thread, but alas, it didn't.

    Classic physics nonsense from the comic books includes:

    • Superman flies faster than a speeding bullet but does not make a sonic boom.
    • Iron Man flies thanks to his boot jets, but does not have incredibly strong stomach muscles.
    • Lots of problems where the energy for Superman style mentally guided flight, force fields, and the like. It's not enough to say "manipulation of gravitons." What is the mechanism for manipulating gravitons? Where does the energy come from to power the mechanism? How exactly does the superhero control the mechanism?
    • Many powers come from "another dimension." I'd like to visit one of those. Oh. I guess that's impossible. Because they don't exist.
    • Extra-dimensional travel seems ridiculous. There are no "parallel Earths."
    • Time travel, like the second Flash (Barry Gordon). Teleportation, like Nightcrawler. Bleargh. Nuff said.
    • How does Batman stay young after all those decades of crimefighting?
    • Shrinking or growing, like Hank Pym. Where does the mass go?
    • The whole telepathic communication with other beings, whether with humans or aniamls, makes no sense. Aquaman is silly. Another problem is the "danger sense" of Spider-Man.
    • Any really strong character needs to have body armor or tough skin, or he is going to get seriously hurt. Take Sub-Mariner. He can punch holes in steel, but he cuts easily. He should have bled to death by now.
    • Biological processes are never really explained. Just how does Wolverine's "fast healing" work? They never explain.
    The best superhero characters are those that are most plausible. These include Batman, Iron Man, and the relatively low powered characters. It shouldn't be surprising that these are the characters with the most developed and most interesting back stories.

    A highly powered character like Superman can be made into a great character by weaving in a tragic flaw or two. Superman not only has to watch out for Kryptonite, he never has a satisfying love life that can last. (Yeah, the physics of him having sex. Har har.) Kal-El (Superman) is a brokenhearted man. He is the last of his race. He wants to help mankind, and will do whatever he can with his superpowers to be of service. But in the end, he is lonely, isolated. In some ways Kal-El is like a religious figure.

    The other route is to make a character based on principles that are far beyond what modern physics can suggest. The prototype is Silver Surfer. While Silver Surfer is a great character, the reader can never really relate to a totally alien being like him.

    The best route is a superhero without superpowers, or very few superpowers. Gadgets, martial arts, and wits fill the gaps. That's how to make a great superhero character.