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Fun With an Induction Cooktop?

fishfrys writes "Besides generating heat quickly and efficiently in ferromagnetic pans, what sorts of fun things can you do with an induction cooktop? This seems like a pretty serious piece of electromagnetic equipment — boiling water can't be the only thing it's good for. I went to YouTube, expecting to find all sorts of crazy videos of unsafe induction cooktop shenanigans, but found only cooking. What sort of exciting, if not stupid, physics experiments can be performed with one? Hard drive scrubber? DIY Tesla coil? There's got to be something."

147 comments

  1. recharge induction-rechargeable devices by Anonymous Coward · · Score: 0

    so fast they explode?

  2. Yes! by Grapplebeam · · Score: 1

    Now you can cook chicken with a Tesla Coil! The possibilities are end... well, you're still only cooking things with a tesla coil. Maybe you'll become a master at it and keep the chicken from being horribly burned in the wrong places, or not cooked at all in others. You could be the first man to be arrested for aggressive chicken handling!

    --
    There is no -1 Disagree.
    1. Re:Yes! by EdIII · · Score: 1

      You could be the first man to be arrested for aggressive chicken handling!

      Uhhh, I hate to burst your bubble, but in Texas they are already passed 5 digits for people arrested for Aggressive Chicken Handling. I hear Arkansas has a special prize for the millionth "customer" too.

      Of course Virginia is the only state that legalized it.

  3. make aluminum foil burn by RealBorg · · Score: 5, Interesting

    that's what i have found so far. normally you cannot use aluminum on an induction cooktop, probably because a thick layer of aluminum is equally as conductive as the copper inductor in the cooktop, however a thin layer of aluminum can be brought to hover itself away from the cooktop and / or begin to glow if held in place. my cooktop took no damage from trying this but of course - don't try this at home

    1. Re:make aluminum foil burn by queazocotal · · Score: 4, Informative

      For much the same reason - 'magnetic stainless' is typically said to be OK for induction cooking, and 'non-magnetic' not.

      This is due to the 'skin depth' (look at wikipedia) being thinner in magnetic materials.

      This means that in both steel and iron pans, which are magnetic, in addition to the high resistance of the pan material, the electricity doesn't go very deeply, so it's only passing through a thin skin of the pan.

      However - with very thin containers, non-magnetic stainless works just fine.
      I regularly heat up a large (non-magnetic) stainless washing up bowl that's maybe 0.5mm thick on my induction cooker.

      Any thicker and it doesn't work.

      My favourite utensil to use with it is actually a cheap 0.8mm or so thick steel wok.

      Heats up in seconds, and once seasoned, is quite non-stick.

      My second favourite is a large steel plate 6mm thick, again seasoned.

    2. Re:make aluminum foil burn by i.am.delf · · Score: 5, Interesting

      Once upon a time I worked in a metal foundry. There people used induction furnaces to melt all sorts of alloys for castings. Skin depth is key. If you have tiny skin depth in your material it will take forever for something interesting to happen. Step 1 find an insulating container which will not burn. Glass can work(assuming your metal melts before the glass does) or ceramic is better. Place fun things in it like steel wool. Turn on the coil. Be astounded by steel wool. Aluminum cans are thin enough to melt, but be cautious they can ignite in air and if they do you can be poisoned or otherwise injured by the alumina.

      I think it might be fun to use a thin metal implement in a glass bowl to cook something from a hot rod.

    3. Re:make aluminum foil burn by noob22 · · Score: 1

      I regularly heat up a large (non-magnetic) stainless washing up bowl that's maybe 0.5mm thick on my induction cooker.

      Washing up bowl? Please explain.

    4. Re:make aluminum foil burn by treeves · · Score: 1

      It's a bowl used for washing up (washing dishes) in. It's a Britishism, AFAIK.

      --
      ...the future crusty old bastards are already drinking the Kool-Aid.
    5. Re:make aluminum foil burn by Prune · · Score: 2, Informative

      Uh, first of all, alumina is not toxic to humans as it's quite an inert material (as are many other inorganic oxides in general). It's only dangerous in physical terms if you inhale a quantity of very fine powder. Second, you don't need induction heating to be amazed by steel wool. If you spread it out (reduce the density so it has lots of air within its volume) it is fairly easy to light with a torch and it looks a bit like fireworks.

      --
      "Politicians and diapers must be changed often, and for the same reason."
    6. Re:make aluminum foil burn by obscuro · · Score: 1

      Put the steel wool on he end of a flexible wire, light it and spin it! Pretty sparks!

      --
      Every rule has more than one consequence.
    7. Re:make aluminum foil burn by Gordonjcp · · Score: 1

      It's a bowl used for washing up (washing dishes) in. It's a Britishism, AFAIK.

      I think people wash dishes in most countries. It's a bad idea to do it in the sink directly, because you can chip your dishes really easily. I suspect a stainless-steel washing up basin would have exactly the same problem, which is why people mostly use plastic ones.

    8. Re:make aluminum foil burn by AnAdventurer · · Score: 1

      Branding iron?

      --
      6.8SPC TR of 550, l xwind at 6, drift rt at 26" drops 77". AT has 503 ft-lbs at 1403 fps. FT 0.86
    9. Re:make aluminum foil burn by Anonymous Coward · · Score: 0

      WTH are your dishes made of? Only time I've chipped a dish in the last 20 years is by dropping it.

  4. Drop it by Helpadingoatemybaby · · Score: 1

    ...off the roof of a building!

    --

    The baby's fine -- please stop sending business cards.

    1. Re:Drop it by Anonymous Coward · · Score: 0

      ...but will it blend?

    2. Re:Drop it by Nefarious+Wheel · · Score: 1

      ...off the roof of a building!

      Catch It And You Can Keep It!! -- Firesign Theatre

      --
      Do not mock my vision of impractical footwear
    3. Re:Drop it by rpstrong · · Score: 1

      ...off the roof of a building!

      Catch It And You Can Keep It!!
      -- Firesign Theatre

      Nope - from National Lampoon's Radio Dinner album.

  5. Induction Heating of Block Ice = Glowing Red Hot I by Anonymous Coward · · Score: 5, Interesting

    I remember seeing induction heating used to make a block of ice glow red hot.

    http://videosift.com/video/Induction-Heating-of-Block-Ice-Glowing-Red-Hot-Ice

    Apparently it heats the trace amounts iron inside the ice so this only works with tap water. Not really sure if it would work with an iduction stove top though. Worth a try.

  6. water balloon by wasteoid · · Score: 1

    safer than your hand. modern induction ranges have safety mechanisms to prevent accidentally burning your hands or other non-cooking inductable materials, so you are probably limited to what will be perceived (by the range) as a skillet/pan/pot - large, ferrous surface.

    1. Re:water balloon by queazocotal · · Score: 4, Informative

      Not really.

      There is no 'safety mechanism' as such that stops it heating hands.

      The coil can safely be energised with no load.
      It won't get too hot, or anything, and it won't noticably heat your hand, or a duck, or anything non-metallic.

      (well, it would heat graphite blocks and such, but that's cheating).

      The reason for the device not turning on with no load is to prevent it heating up forks and other metallic implements that have been placed on the surface.

      www.st.com/stonline/books/pdf/docs/12443.pdf

    2. Re:water balloon by Strider- · · Score: 1

      Also, I would assume, rings and jewlery that may be on your hands. Being a Canadian Engineer, I wear an iron ring, though it's non-magnetic now (closer to stainless I suppose) so I don't know how much an induction cooktop would do to it.

      Then again, I prefer the primal experience of cooking on a gas flame myself.

      --
      ...si hoc legere nimium eruditionis habes...
    3. Re:water balloon by Psychofreak · · Score: 2, Interesting

      Blacksmith's induction forge: for the modern smith.
      http://www.youtube.com/watch?v=k4xsqw463Hs

      Phil

      --
      Laugh, it's good for you!
  7. Rail gun by rewt66 · · Score: 1

    Hardware modding may be required. Remove ceiling or wall before use. If you try it, on your own head be it - I do not guarantee your safety.

    1. Re:Rail gun by iammani · · Score: 1

      By that, do you imply that you do guarantee his safety, if he did not try it on his own head?

    2. Re:Rail gun by Surt · · Score: 1

      Sure, guarantee limited to original purchaser of advice, and not heirs or estate.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    3. Re:Rail gun by RichiH · · Score: 1

      Wrong coiling. And the value in a coil is the coiling. So re-coiling means you are better of starting from scratch.

  8. It's consumer electronics by contra_mundi · · Score: 1

    It's been carefully designed to be only usable in heating up pans and pots and maybe their contents. Maybe because a friend of mine got one that's so sentive that it sometimes decides his cooking isn't worth heating up!

  9. Repulsion coil? by Anonymous Coward · · Score: 0

    Try cutting a large metal "washer" out and placing it on the "burner." This may demonstrate Lenz's second law and cause some violent repulsion . . . although I haven't tried it.

    I do know it doesn't work with my gas burners though.

  10. Try whatever you got in the house. by Anonymous Coward · · Score: 2, Funny

    Try some unexploded WW2 shells, some walmart bullets, a kid with braces. An arm with a tattoo. A hamster that ingested iron shavings. You were looking for unsafe and stupid things to try, right?

    1. Re:Try whatever you got in the house. by Dogtanian · · Score: 5, Funny

      unexploded WW2 shells, some walmart bullets, a kid with braces. An arm with a tattoo. A hamster that ingested iron shavings.

      Raindrops on roses. Whiskers on kittens. Bright copper kettles. Warm woolen mittens. Brown paper packages tied up with strings.

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    2. Re:Try whatever you got in the house. by Anonymous Coward · · Score: 0

      Bomb squads and robots. Packages on the curb. Evacuated neighborhoods and trauma centers on standby.

      It doesn't rhyme very well but that's what a brown paper package tied up with string will get you. God forbid you leave a big copper kettle sitting out. Somebody would immediately steal it for the cash metal value. Warm mittens would be ignored. The kittens would starve after their mother was hit by a car.

      Times change.

    3. Re:Try whatever you got in the house. by RichiH · · Score: 1

      > some walmart bullets

      You can buy bullets in a supermarket? I guess there are some things about the USA I will never understand.

    4. Re:Try whatever you got in the house. by SHaFT7 · · Score: 1

      The walmart super centers are half super market, and half standard walmart. the bullets are in the standard walmart side.

    5. Re:Try whatever you got in the house. by RichiH · · Score: 1

      I thought Wal-Mart was a super-market?

    6. Re:Try whatever you got in the house. by Quantus347 · · Score: 1

      Walmart is an all-purpose general retail store. The larger Walmarts, or "Super-centers", have a grocery store attached to them, but it is not a standard thing. Bullets are typically found in the hunting part of the Sporting Goods section, near all the camping gear, fishing supplies, etc.

      --
      Common Sense isn't as Common as people think...
    7. Re:Try whatever you got in the house. by Anonymous Coward · · Score: 0

      These are a few of my favourite things to ignite with an induction furnace.

    8. Re:Try whatever you got in the house. by DrVomact · · Score: 1

      Bullets are typically found in the hunting part of the Sporting Goods section, near all the camping gear, fishing supplies, etc.

      Really? I've never seen them selling any reloading supplies...just cartridges. FYI..."bullets" are pieces of lead, possibly in combination with other metals, like copper. A cartridge is composed of a bullet stuck in a case (usually made of brass), gunpowder inside the case, and a primer on the bottom (the little button thingy that explodes and ignites the powder when the firing pin of a gun strikes it).

      --
      Great men are almost always bad men--Lord Acton's Corollary
    9. Re:Try whatever you got in the house. by Methuseus · · Score: 1

      Haven't you seen that they're rebuilding all their standard stores into Super Wal-Marts? Been happening all around here for years. Most are now twice the size of the original, or more.

      --
      Two things are infinite: the universe and human stupidity, though I'm not yet sure about the universe. - A Einstein
    10. Re:Try whatever you got in the house. by Anonymous Coward · · Score: 0

      One stop shopping, you can get tires installed on your car and your oil changed, buy a hunting rifle and bullets, six pack of beer, gallon of skim milk, fresh vegtables, some canned soup, fresh baked bread, frozen pizzas, chemicals for your hot tub, bed sheets and curtains, a suit and tie, work boots, 5 yards of bulk clothing material and a sewing machine, a 50 inch plasma TV, a new cell phone, a treadmill, do some banking, get a hair cut all in one huge ass store. All at very competitive prices. Basically they sell the same stuff that other retailers sell, but this is all in one and usually at a lower price.

    11. Re:Try whatever you got in the house. by Anonymous Coward · · Score: 0

      Not since Comrade Obama got in office. The shelves have been cleared here for a couple years now. According to the sporting goods guy at my neighborhood wal mart they can't even unload the pallets. The vultures pick them clean as soon as they are brought out. Everyone's afraid that commie is gonna outlaw ammo as a form of backdoor gun control. Can't find any shotgun shells that aren't gold plated silver werewolf load anywhere around here. I refuse to pay $20.00 for 5 rounds. I'll be like Ramirez and knife a burglar with my gun first.

    12. Re:Try whatever you got in the house. by Anonymous Coward · · Score: 0

      Yeah, I keep wondering when people are going to realize that Obama's not coming to take your guns & you don't really need to hoard 10000 rounds for each...

    13. Re:Try whatever you got in the house. by chad.koehler · · Score: 1

      This was a localization issue.  In this context (in the US at least), bullet == cartridge.

    14. Re:Try whatever you got in the house. by omnichad · · Score: 1

      Or maybe it's hunting season?

  11. Re:Lightbulb by geekoid · · Score: 2, Informative

    It's a nerd site. We like to investigate, determine, build and generally fiddle.
    The real question is "Why is a boring muggle like you even doing here?"

    --
    The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  12. So's a Microwave, but... by Quantus347 · · Score: 1

    Its not hard to convert one to a MASER that can boil water, burn wood, or blow up zombie heads at 50 yards or more. Not that Ive tried it of course, that would be dangerous, irresponsible, and possibly illegal. Just sayin'

    --
    Common Sense isn't as Common as people think...
    1. Re:So's a Microwave, but... by goodmanj · · Score: 3, Insightful

      A microwave oven's power source is not a maser, just like an incandescent light bulb is not a laser.

      If you don't understand the distinction, PLEASE don't open up your microwave and try to make a death ray.

    2. Re:So's a Microwave, but... by mujadaddy · · Score: 1

      The first microwave ovens could cook a turkey in 15 minutes. Do want.

      --
      Populus vult decipi, ergo decipiatur...
      "Force shits upon Reason's back." - Poor Richard's Almanac
    3. Re:So's a Microwave, but... by Anonymous Coward · · Score: 0

      If you don't understand the distinction, PLEASE don't open up your microwave and try to make a death ray.

      If I do understand the distinction, then can I make a death ray?

    4. Re:So's a Microwave, but... by steeleyeball · · Score: 1

      True, If you like rubbery turkey, but they also caused your scrambled eggs to turn kind of a greenish colour.

    5. Re:So's a Microwave, but... by 644bd346996 · · Score: 1

      Yes, but you still can't make it from a microwave oven.

    6. Re:So's a Microwave, but... by zippthorne · · Score: 1

      Erm.. You can make a death ray out of your microwave's magnetron, it doesn't need to be a MASER. You can make a death ray out of an equivalent-power incandescent bulb, too...

      --
      Can you be Even More Awesome?!
    7. Re:So's a Microwave, but... by Anonymous Coward · · Score: 0

      Please learn to read.

    8. Re:So's a Microwave, but... by rubycodez · · Score: 1

      pump the cavity of a homemade maser with RF from a microwave oven's magnetron

  13. Re:Lightbulb by Captain+Centropyge · · Score: 1

    Perhaps we should get off your lawn and stop tinkering with this "science" garbage, too? Your name isn't Red Foreman, is it..?

    --
    Bite my shiny metal ass!
  14. sure by Anonymous Coward · · Score: 0

    Sure there is, me and my brother managed to get pieces of metal red glowing.
    We connected our own coil to stuff inside, and any metal object that we put in/on the could started glowing.

  15. remote iPhone volume control by guorbatschow · · Score: 5, Interesting

    Last time I used my induction stove to cook water for noodles, I put the power to max, all the while listening to music on my iphone via headphones. You know, those standard apple headphones with microphone and volume controls. Right when I put the power to max, the music went off. Turns out the volume was set to minimum. So I tried to restore the volume via touch controls, but it went to minimum immediately, again. I already had experience with malfunctioning apple headphones (cable short-circuit) so I unplugged them, which helped. Then I noticed that the proximity to the cooktop had an effect. Apparently the induction pattern induced the same signal in the headphone cables that a volume down would produce...

    Anybody with a Bosch induction stove and an iPhone/iPod should try to confirm this.

    1. Re:remote iPhone volume control by Anonymous Coward · · Score: 5, Funny

      In truth it was the AI in the stove commenting on your taste in music. Try it without the Celine Dion next time.

    2. Re:remote iPhone volume control by geekoid · · Score: 3, Interesting

      get a magnet near the headphone wires, and you can control the device.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    3. Re:remote iPhone volume control by bic2k · · Score: 1

      This happens to me with my Kenmore model...

      --
      --- its to bad about the monkey, I kinda liked them
    4. Re:remote iPhone volume control by Anonymous Coward · · Score: 0

      In truth it was the AI in the stove commenting on your taste in music. Try it without the Celine Dion next time.

      Brilliant comment!!!!!!!!!!!!!!

    5. Re:remote iPhone volume control by zippthorne · · Score: 1

      But.. Celine Dion is an awesome song.

      --
      Can you be Even More Awesome?!
    6. Re:remote iPhone volume control by dangitman · · Score: 1

      Last time I used my induction stove to cook water for noodles

      "Cooking" water?

      I think the term you are looking for is "heating" or "boiling." When you heat water, and then allow it to cool, it is just the same as water that was never heated. Cooking implies a permanent change to the material that has been cooked. For example, when you cook a raw chicken, and then let it cool, it doesn't revert to being a raw chicken.

      --
      ... and then they built the supercollider.
    7. Re:remote iPhone volume control by TheLink · · Score: 1

      When you heat water, and then allow it to cool, it is just the same as water that was never heated.

      If you boil tap water and let it cool down, it normally has less air in it than before. When you freeze that water it will have fewer bubbles.

      This concept can be useful in some cooking recipes if you don't want the final product to have so many bubbles, e.g. steamed egg/chawan mushi.

      --
    8. Re:remote iPhone volume control by strangluv2 · · Score: 1

      My Mercedes ML500 increases the volume every time I drive under HT power lines....

    9. Re:remote iPhone volume control by EsbenMoseHansen · · Score: 1

      Actually, cooking water is a common method to reduce the calcium content around here (we have very "hard" water).

      --
      Religion is regarded by the common people as true, by the wise as false, and by rulers as useful.
    10. Re:remote iPhone volume control by Kazymyr · · Score: 1

      In all honesty, you are in fact cooking all the microorganisms in the water...

      --
      I hadn't known there were so many idiots in the world until I started using the Internet -Stanislaw Lem
    11. Re:remote iPhone volume control by H3xx · · Score: 0

      It was the AI in the iPod saying, "Okay, you're cooking at maximum power. Perhaps you should concentrate on your cooking before you kill someone."

      Damn auto-configuration. It's exactly why I don't use Ubuntu.

      --
      "Ubuntu" - an African word meaning "Slackware is too hard for me."
    12. Re:remote iPhone volume control by H3xx · · Score: 0

      In all honesty, you are in fact cooking all the microorganisms in the water...

      I wonder how many single-celled organisms it takes to make soup.

      --
      "Ubuntu" - an African word meaning "Slackware is too hard for me."
    13. Re:remote iPhone volume control by omnichad · · Score: 1

      When you cook packaged pasta in boiling water it will hydrate - let it cool and sit, and it will dry back into dry pasta again. Cooking just implies more ingredients than water - not necessarily just chemical changes.

  16. Re:Lightbulb by Anonymous Coward · · Score: 0

    Feel free to fuck off any time.

  17. Producing high voltages isn't going to work. by Mike+Van+Pelt · · Score: 3, Informative

    Induction cooktops operate at a frequency of a few tens of kilohertz. Using it to excite a Tesla coil probably can't be made to work, at least, not with a reasonable number of turns on your secondary coil. The coil under the surface of the cooktop has a large number of turns.

    (To step up voltage, you want a few turns on the primary, and many times as many turns on the secondary.)

    1. Re:Producing high voltages isn't going to work. by Technician · · Score: 2, Interesting

      Using the coil from a monitor flyback transformer with the powdered iron core removed, the secondary often will have it's voltage rating exceeded in a spectacular display. Be sure to use lots of ventilation.

      If you have several old dead monitors, you have a source of these.

      --
      The truth shall set you free!
    2. Re:Producing high voltages isn't going to work. by Anonymous Coward · · Score: 0

      Tesla coils don't work identically to the typical transformer principle of turns-ratio. The primary source of the voltage gain is from the resonant voltage rise caused by the primary and secondary coils having the same resonant frequency. Additionally, a very large diameter secondary with 2000 turns (16+ inches), and a 36x8 inch diameter toroid could get you under 40kHz. The biggest constraint at this level is input current, and it would take a lot more power than any consumer electronics product could possibly put out.

    3. Re:Producing high voltages isn't going to work. by Technician · · Score: 2, Informative

      A Tesla coil works by a very high primary pulse of current and then it ringing in a LC tank at the same frequency the resonant secondary is. Most inductive cooktops have no tuning to match the resonant frequency of the secondary. Most Tesla coils work on higher resonant frequency than the cooktops due to the nature of the secondary.

      One is a non resonant shorted turn and low impedance. The other is high Q and resonant over a very narrow frequency range. Outside of resonance, it is high impedance.

      --
      The truth shall set you free!
    4. Re:Producing high voltages isn't going to work. by DanRanger · · Score: 1

      Maybe a laptop computer could be charged using half of the U-core of a monitor/TV flyback transformer and a high-speed diode bridge. The 3" waxed HV winding sits like a hockey puck directly on the cooktop's effective 5" surface, without the ferrite core half in between .

    5. Re:Producing high voltages isn't going to work. by Prune · · Score: 2, Interesting

      This is why Tesla coils seem a lousy way to get high voltage. I've bought not-too-large 250 kV transformers from industrial portable X-ray machine power supply on eBay previously and you can chain a few together (in an oil tank, of course) to get in the megavolt range--at significantly higher _continuous_ power levels than with a Tesla coil of the same size. TCs are way oversized for what they accomplish.

      --
      "Politicians and diapers must be changed often, and for the same reason."
  18. Re:Lightbulb by Anonymous Coward · · Score: 0

    You can cook food with one. End of story.

    Why are all of these pointless, irrelevant questions asked? This site is now worse than Yahoo Answers at the exception of the lame cartoon avatars. Get a job, and get to work. You might find yourself doing something productive.

    HOW IS BABBY FORMED?

  19. Re:Lightbulb by houghi · · Score: 0, Redundant

    Asking the question is not being a nerd. He should come up with his own ideas and the tell us what he did. He is not a geek, he is a script kiddie.

    Imagine if Linux would have asked Tanenbaum on how to make a good kernel.

    --
    Don't fight for your country, if your country does not fight for you.
  20. Re:Lightbulb by Dr+Caleb · · Score: 5, Funny

    Tanenbaum would have said "Holy fuck! A talking Linux!"

    --
    "History doesn't repeat itself, but it does rhyme." Mark Twain
  21. This looks like a job for--Mythbusters! by Chaseshaw · · Score: 1

    sounds like something for the Mythbusters to check out!

    1. Re:This looks like a job for--Mythbusters! by SEWilco · · Score: 2, Insightful

      1. Create a myth about induction cooktops.

    2. Re:This looks like a job for--Mythbusters! by Anonymous Coward · · Score: 0

      2. cut a hole in the induction cooktop

    3. Re:This looks like a job for--Mythbusters! by Anonymous Coward · · Score: 0

      Step 2:

      Step 3: Profit!

    4. Re:This looks like a job for--Mythbusters! by iammani · · Score: 1
    5. Re:This looks like a job for--Mythbusters! by Anonymous Coward · · Score: 0

      3. fill the hole with explosives

  22. Re:Lightbulb by Anonymous Coward · · Score: 0

    I was wondering about this myself. How girl get pragnant?

  23. Re:Induction Heating of Block Ice = Glowing Red Ho by skids · · Score: 2, Interesting

    Neat. I imagine their are potential lithography applications. Or you could just inject a BB into an egg and cook it from the inside out for the ultimate in runny whites.

  24. Re:Lightbulb by tophermeyer · · Score: 5, Informative

    Can we just go ahead and get a "-1, Goatse" mod option?

  25. Re:Lightbulb by alta · · Score: 2, Informative

    WARNING DO NOT CLICK GOATSE

    --
    Do not meddle in the affairs of sysadmins, for they are subtle, and quick to anger.
  26. Mine goes up to 11 ... by PolygamousRanchKid+ · · Score: 3, Informative

    My stove has levels that go up to 11. It's from Functionica. Whenever I get a visit from someone from the US, who has seen Spinal Tap, I show it to them and they laugh their asses off.

    --
    Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
    1. Re:Mine goes up to 11 ... by snspdaarf · · Score: 1

      At least they don't laugh until they choke to death on someone else's vomit.

      --
      Why, without your clothes, you're naked, Miss Dudley!
    2. Re:Mine goes up to 11 ... by Ogi_UnixNut · · Score: 1

      Yeah well, mine goes up to 12 :P (It does actually, damn Germans)

    3. Re:Mine goes up to 11 ... by Anonymous Coward · · Score: 0

      Congratulations! You have been exposed to what passes for the German sense of humor.

      And you survived -without having your large intestine leap straight up your neck to choke you and end the misery.

      This is no small feat.

      Well done sir.

    4. Re:Mine goes up to 11 ... by Idiomatick · · Score: 3, Interesting

      My stove has a button to 'STOP TIME'! Top that!

    5. Re:Mine goes up to 11 ... by tom17 · · Score: 1

      Grunthos the flatulent? Is that you?

    6. Re:Mine goes up to 11 ... by nu1x · · Score: 1

      Well it's neat, but you have to admit that bringing a stove (and a power source to boot !) to combat is quite a stretch. Well maybe your tank could carry it.

      --
      I have nothing to lose but my bindings.
    7. Re:Mine goes up to 11 ... by yonung-iat.com · · Score: 1

      Very good

      --
      http://www.yonung-iat.com Yonung Industrial Automation and Electric Equipment Co., Ltd.
  27. Death rays and logic by Anonymous Coward · · Score: 0

    If you don't understand the distinction, PLEASE don't open up your microwave and try to make a death ray.

    If I do understand the distinction, then can I make a death ray?

    If you don't understand logic, please don't affirm the consequent.

  28. Re:Induction Heating of Block Ice = Glowing Red Ho by RajivSLK · · Score: 1

    Wouldn't the BB just sink to the bottom of the egg? you'd have to suspend it in the middle of the yolk somehow...

  29. Wireless charger by arc86 · · Score: 1

    Use it to charge 30 Palm Pre's simultaneously. Or vice versa, buy 30 touchstone chargers and use them to cook a nice meal for that special lady in your life.

  30. Re:Lightbulb by by+(1706743) · · Score: 3, Informative

    Can we just go ahead and get a "-1, Goatse" mod option?

    Perhaps we could get /. to display the dereferenced URL instead of bit.ly, etc. -- hardly rocket science (don't click on any of these, obviously...):

    user@host:~$ wget -O /dev/null http://bit.ly/d9LffL 2>&1 | grep -o 'http[^ ]*'
    http://bit.ly/d9LffL
    http://goatse.fr/
    http://goatse.fr/

  31. Here's one by inode_buddha · · Score: 1

    I've seen induction heating used to temper truck axles, among other things. Though I imagine that with minor tweaks you could make one hell of a HERF weapon out of one. Screw up all the cell towers within a few miles, etc. Check ebay for used resturaunt equipment.

    --
    C|N>K
    1. Re:Here's one by John+Hasler · · Score: 2, Interesting

      > ...with minor tweaks you could make one hell of a HERF weapon out of one...

      Not likely. These things operate at about 27KHz. On the other hand, you might be able to generate a couple of kilowatts of ultrasound by fabricating a "speaker cone" from a resonant metal disk and some magnets and use it to curdle your brain.

      --
      Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
    2. Re:Here's one by Ungrounded+Lightning · · Score: 2, Interesting

      I've seen induction heating used to temper truck axles, among other things.

      I saw it used in the manufacture of commutators for starter motors:
        - Copper bar bent into circle.
        - Induction heat to orange in about 5 seconds, to weld the joint and take the stresses out of it. Result: Stress-free donut.
        - Smash the donut into shape (segmented hollow top-hat) with dies.
        - Mold plastic into it - to support it and make an insulated press-fit for the shaft).
        - Saw the segments apart.

      I've been trying to figure out how to make slip rings for a windmill. Seems like bending, welding, and annealing a copper bar would do the trick. And an induction hot plate ought to be just the ticket for the welding/annealing step.

      --
      Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
    3. Re:Here's one by inode_buddha · · Score: 1

      Hi ULR, I've been hanging out on the same board as you, under different nicks... (otherpower.com) as for your copper question, I think you'd be better off with conventional TIG welding due to the inert gas atmosphere - it's very difficult to work copper otherwise. Certainly TIG is much cheaper. Unless you plan mass-production enough to justify the cost of induction machines.

      --
      C|N>K
  32. Re:Lightbulb by geekoid · · Score: 5, Insightful

    2 things:
    1) Asking is how you find a place to start. When I want to create with electronics, I don't do mine copper.

    2) Presuming you meant Linus, he asked several people about how to create a kernel. He was taught a foundation of computer science.

    Do you think Linus that created a kernel with no knowledge? having never asked an computer science questions?

    --
    The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  33. Using it to wipe a harddrive? by Kojiro+Ganryu+Sasaki · · Score: 1

    Would that work?

    1. Re:Using it to wipe a harddrive? by sjames · · Score: 1

      I'm not sure about the magnetic field, but if the drive gets hot enough, it's wiped :-)

    2. Re:Using it to wipe a harddrive? by dangitman · · Score: 2, Funny

      Why would you need to? All hard drives have a self-wiping function if you wait long enough. With today's quality control standards, you usually don't have to wait very long.

      --
      ... and then they built the supercollider.
    3. Re:Using it to wipe a harddrive? by Tycho · · Score: 1

      Well, there is the Secure Erase ATA command present on all current hard drives, which is a full drive form and something the NIST considers more secure than the old DoD multiple pass overwrite procedure. Granted, just erasing or copying over the data once is 99.9999% of the time is going to make the previous data totally unrecoverable anyway. Although the effects of an induction range on the permanent, rare-earth, magnets from the voice coil motor that moves the heads might be fun. The metal plate those magnets are mounted on might also be at least some fun. The alloys used have a high magnetic permeability and thus can screen out much of the magnetic field from those magnets, I dunno what that might do on an induction stove, let us know if you try this and survive.

      --
      Impersonating Tycho from Penny Arcade since before there was a PA.
  34. Re:Lightbulb by Mikkeles · · Score: 2, Funny

    'Imagine if Linux[sic] would have asked Tanenbaum on how to make a good kernel.'

    We might have got a good kernel.

    (Sorry, I couldn't resist)

    --
    Great minds think alike; fools seldom differ.
  35. Re:Lightbulb by Anonymous Coward · · Score: 0

    Linus used to call himself "Linux" on the intarwebs back in 1991.

  36. One Experiment to Try by Hoi+Polloi · · Score: 1

    Here is one experiment to try, how much can I fool around with an induction cooktop before I hurt myself?

    --
    It is by the juice of the coffee bean that thoughts acquire speed, the teeth acquire stains. The stains become a warning
  37. Re:Induction Heating of Block Ice = Glowing Red Ho by Anonymous Coward · · Score: 4, Insightful

    There is a triangular piece of metal in the ice. It's a demonstration by Huettinger, a manufacturer of induction heaters.

    http://www.huettinger.com/en/about-us/multimedia.html

    I think water would flash to steam before you got it to glow. Unless it was under enormous pressure I suppose.

  38. Re:Lightbulb by StikyPad · · Score: 3, Funny

    Thanks, but at least provide a full list of things you shouldn't do with goatse:

    • Warning: Pregnant women, the elderly, and children under 10 should avoid prolonged exposure to goatse.
    • Caution: Goatse may suddenly accelerate to dangerous speeds.
    • Goatse contains a liquid core, which, if exposed due to rupture, should not be touched, inhaled, or looked at.
    • Do not use goatse on concrete.
    • Discontinue use of Happy Fun Ball if any of the following occurs:
      • itching
      • vertigo
      • dizziness
      • tingling in extremities
      • loss of balance or coordination
      • slurred speech
      • temporary blindness
      • profuse sweating
      • heart palpitations
    • If goatse begins to smoke, get away immediately. Seek shelter and cover head.
    • Goatse may stick to certain types of skin.
    • When not in use, goatse should be returned to its special container and kept under refrigeration. Failure to do so relieves the makers of goatse, Wacky Products Incorporated, and its parent company, Global Chemical Unlimited, of any and all liability.
    • Ingredients of goatse include an unknown glowing substance which fell to Earth, presumably from outer space.
    • Goatse has been shipped to our troops in Saudi Arabia and is also being dropped by our warplanes on Iraq.
    • Do not taunt goatse.
  39. Why So Expensive? by Doc+Ruby · · Score: 1

    Why are induction cooktops so expensive (here in NY)? I understand they're sold cheap in Asia. They don't seem to need to be very expensive.

    If they were cheap, they'd be worth using for energy efficiency. But they cost more than the energy savings.

    --

    --
    make install -not war

    1. Re:Why So Expensive? by Bigjeff5 · · Score: 1

      Because they're cool.

      Cool shit costs lots of money.

      They aren't cool in Asia any more, so they are cheap.

      Duh. ;)

      --
      Security is mostly a superstition... Avoiding danger is no safer in the long run than outright exposure. - Helen Keller
    2. Re:Why So Expensive? by kent_eh · · Score: 1

      Why are induction cooktops so expensive .

      Because people will pay it.

      --

      ---
      "I can't complain, but sometimes still do..." Joe Walsh
    3. Re:Why So Expensive? by Anonymous Coward · · Score: 0

      Welcome to aMERICA.

  40. Frying Passports by Doc+Ruby · · Score: 1

    Passports with IC chips in them can have the chips fried by a microwave oven, but it's hard to figure out how much to fry them without burning the passport itself.

    Can induction cooktops do it more precisely?

    --

    --
    make install -not war

  41. Make Cubic Zirconia by Anonymous Coward · · Score: 0
  42. Re:Induction Heating of Block Ice = Glowing Red Ho by khallow · · Score: 1

    Apparently it heats the trace amounts iron inside the ice so this only works with tap water. Not really sure if it would work with an iduction stove top though. Worth a try.

    No offense, but if the ice were this hot, it'd melt and flash into steam. There's probably metal (not just trace amounts) embedded in the ice and that's what's glowing.

  43. induction charger? by hitmark · · Score: 1

    rig up a matching coil so that the magnetic field can be converted back to electricity and charge a battery powered device.

    --
    comment first, facts later. http://chem.tufts.edu/AnswersInScience/RelativityofWrong.htm
  44. Re:Lightbulb by webgovernor · · Score: 0, Offtopic

    "Explain to me what is wrong the Harry Potter."

    Are you asking "the Harry Potter" to explain what is wrong, or are you asking "what is wrong *with* Harry Potter?"

    -1 for ambiguity

  45. Re:Lightbulb by Anonymous Coward · · Score: 0

    "Holy fuck! There were talking Linuxes in 1991!"

  46. user-side answer (w/ Greasemonkey) by KingAlanI · · Score: 3, Informative

    http://userscripts.org/scripts/show/40582

    Here's a user-side answer in the form of a Greasemonkey script... /. could thereotically implement a bit of JS like that server-side (this works with a bunch of URL shorteners)

    --
    I listen to both RIAA and non-RIAA stuff if I like the music, tangential business/politics nonwithstanding.
  47. Re:Lightbulb by ThurstonMoore · · Score: 1

    Why is there no -1 Dickhead?

  48. Calling on the /. community... by twebb72 · · Score: 1

    Someone should launch a youtube series called 'Will it Smelt?'

  49. Re:Lightbulb by Anonymous Coward · · Score: 0

    This is Slashdot, and almost by definition this is the wrong place to be if you are seeking reproductive advice.

  50. Re:Lightbulb by Frnknstn · · Score: 1

    Your sig:

    Browsing with classic discussion, noscript, at -1 and nested no hidden comments and I only mod UP

    Your post:

    "why is a boring muggle like you even doing here?"
    -1 for HP reference, -1 for grammatical failure

    So in this case you wanted to mod UP by negative 2?

    --
    If it's in you sig, it's in your post.
  51. Re:Lightbulb by Anonymous Coward · · Score: 0

    "Do you think Linus that created a kernel with no knowledge? having never asked an computer science questions?"

    That's certainly what Professor Tanenbaum thought.

  52. Induction cooktops = expensive = not toys by noidentity · · Score: 1

    If I had an induction cooktop, I'd not play around with it, because these are expensive and you never know what will damage the thing. They likely use some form of feedback, and doing stupid things could cause the driver to do something bad and kill some parts. Doesn't seem worth the risk. Maybe someone familiar with the drivers can comment on how robust they are.

  53. Re:Lightbulb by Graff · · Score: 1

    People actually click on links to link-shortening services?

  54. Nothing fun to be had by Quick+Reply · · Score: 1

    With no you-tube videos, and not even any Slashdot replies interesting enough to get enough mod points to be seen (and that is saying a lot), it appears that there is nothing fun that you can do with whatever it is that you are asking.

  55. Re:Lightbulb by sepelester · · Score: 1

    No, he didn't.

  56. Play with transformers. by howzit · · Score: 1

    Seeing that the supply/load is INDUCTIVE, look at the plate being the PRIMARY COIL of a transformer, you only need to supply a SECONDARY COIL. Play with some transformers and a voltmeter. You may find you can charge your phone without having some fancy jack-plug for it's transformer, or maybe you can charge the ipod whilst listening AND cooking at the same time!

  57. Re:Lightbulb by Methuseus · · Score: 1

    I clicked on the parent's link, and, for once, I am glad we have a filter here at work...

    --
    Two things are infinite: the universe and human stupidity, though I'm not yet sure about the universe. - A Einstein
  58. Fun with induction heaters by Anonymous Coward · · Score: 1, Informative

    If you want to play around with induction heating but don't want to risk an expensive cooktop, there is a slick little open source heater here http://www.neon-john.com/Induction/Roy/Roy.htm. About the same power as a residential cooktop but without all those pesky protections and a lot cheaper to build. A company called http://www.fluxeon.com has kits and stuff for this project.

  59. Re:Lightbulb by profundus · · Score: 1

    *sigh* If wishes were horses :-/

    --
    A new revelation every day
  60. Re:Induction Heating of Block Ice = Glowing Red Ho by chad.koehler · · Score: 1

    Most BBs are made of lead -- wouldn't that be a bad idea, just in general?