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User: Hasmanean

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Comments · 92

  1. Re:Dual Frequency on Ionospheric Interference With GPS Signals · · Score: 1

    Actually even civilians can use the second frequency to determine ionospheric delay. You do not have to actually decrypt the military signal just to use it to check the delay of the L1 signal.

  2. Re:Time to declare war? on Ionospheric Interference With GPS Signals · · Score: 1

    Actually, there is some speculation that the Van Allen belts were the result of high altitude nuclear explosions in the 1950s. The Van Allen belts were discovered in 1958.

    They are not terrorists, they are the result of the cold war superpower arms race.

  3. Re:First! on Paper Stronger Than Cast Iron · · Score: 1

    Well, if you're a Precolumbian Lamanite, you might write it on plates of gold.

    Cf. Book of Mormon.

  4. Everbody knows... on Paper Stronger Than Cast Iron · · Score: 1

    cast iron doesn't have any tensile strength to speak of. That's why they don't use it in structural applications. It is made of coarse grains of metal held together a bit loosely. That also makes it very brittle.

    You can make lampposts and garden furniture out of it, but not much else nowadays. They use it for table-saw tops and machinery, since those same properties (granular structure) that make it brittle, also enable it to absorb vibrations very well.

  5. Re:Peer Review is Elitism on Are Academic Journals Obsolete? · · Score: 1

    Minor point of order: Fermat was not that far ahead of his time. He inspired Newton when he developed the calculus, but he was an *amateur* mathematician (lawyer by profession), and he sometimes didn't write his proofs down. So it's probably fairer to say that it took hundreds of years to accomplish what Fermat attempted and thought he had solved.

    So later mathematicians (Gauss for example) sometimes questioned whether had proved them at all, given how difficult their own efforts had been.

  6. penny wise, pound foolish on Latest "Green" Power Generation — Your Feet · · Score: 1

    I common speaking, people don't draw the distinction between something like the "energy" coffee provides you, and the real bulk energy that comes from eating food.

    This article falls in the same boat. Powering small devices or a small subsystem on a bridge from cars is one thing, lighting up your city from pedestrian power is another.

    Most buildings are designed to minimize the amount of energy required to travel through them. Putting energy harvesting devices is like putting speed bumps in the place.

    If they really wanted, they could save more overall simply adding a few more suburban parking lots. Or adding a few more entrances on existing ones.

  7. Re:Space Debris on New Method Discovered For Making Telescopes On the Moon · · Score: 1

    It doesn't matter. Each impact to the mirror would merely reduce the light collecting ability of the whole by the %age of the area that is occluded. Try putting a spot on a lens, and see the effect it has on the image. There won't be a spot visible, but the whole image will dim a bit.

    Assuming the build the mirror in sections of course...so impacts don't crack the entire thing.

  8. add a radio telescope too... on New Method Discovered For Making Telescopes On the Moon · · Score: 1

    "Two or more such telescopes spanning the surface of the Moon can work together to take direct images of Earth-like planets around nearby stars and look for brightness variations that come from oceans and continents."

    Two telescopes plus a very long radio-telescope array would look like this:

    http://www.nasa.gov/images/content/54799main_mars_smiley_face.gif

  9. Re:Newsflash: Scientists find new way to get fundi on New Method Discovered For Making Telescopes On the Moon · · Score: 1

    That's true. Nanotubes mixed with dust is nothing special. ANY fibrous material mixed in with a binder will produce a composite structure with great strength.

    tubes and lunar dust is not much different from mud and straw.

  10. Re:What's the old method ... on New Method Discovered For Making Telescopes On the Moon · · Score: 1

    Nuclear blast calculated to produce a parabolic crater, with lunar glass on the surface.

  11. In Afghanistan...rocket launchers are de rigeur on Games Need More Artfully Story-Entwined Gameplay · · Score: 1

    quote: "Game engines are strong enough that we can see the seams in the narrative fabric. It's no longer acceptable that we can take our girlfriend on a date and never once have her mention the fact that we're carrying a missile launcher by our side. "

    In Afghanistan anyone could walk around anywhere with a rocket launcher by his side, but it is not acceptable to even have a girlfriend, much less take her out on a date.

  12. Re:Best Friend on Diamonds Key To Quantum Computing · · Score: 1

    No, diamonds are a nerd's best friend.

  13. how about adding our brains to computers... on Kurzweil on the Future · · Score: 1

    ...and building software that will actually do what we want it to do.

  14. Microcode.... on Scientists Build Mind-Reading Computer · · Score: 1

    Looks like the brain was programmed with microcode.

    Now the only question is, risc or cisc?

    And how many threads of conciousness in a sane person's mind?

  15. one photon, more electrons means... on Avalanche Effect Demonstrated In Solar Cells · · Score: 1

    more current, less voltage.
    Same power, more or less.

    The 44% figure probably reflects the fact that increasing one at the expense of the other reduces the effects of some non-idealities in the cell. So the efficiency improves, but not by an order of magnitude.

  16. Re:Great! on Breakthrough In Plastic Lasers · · Score: 1

    Yah, nothing speaks class like an evil lair decorated with plastic plants and plastic sharks.

    In fact, plastic gives the impression that it's not quite evil yet, a bit more of a nuisance lair.

    Hasan

  17. Re:The rule of thumb is.... on Pushing a CPU to Heat Death, Intentionally · · Score: 1

    >If builders built buildings the way programmers wrote programs, then the first woodpecker would destroy civilization.

    The first fleas (carried by rats), nearly did once.

    They used to build houses in England with straw on the floor, and thatched roofs. Rats, feces, etc., would all get embedded into the straw.

  18. Re:The first problem is on UK Teen Cited For Calling Scientology a "Cult" · · Score: 1

    IIRC even the Queen needs to ask the Lord Mayor's permission before she enters the city of London. She only used to do so once a year, for some special occasion.

  19. Re:Whats the difference? on UK Teen Cited For Calling Scientology a "Cult" · · Score: 1

    A religion is to a cult what a government is to a gang. It's a difference in scale, but more subtly gangs and cults do pretty crude things to coerce their members to stay in line. Governments and religions are generally benign for the majority of their citizens, most of the time. The latter can and do degenerate into the former.

    Gangs/cults use the instincts for group dynamics which are present inside our brains, and can be seen on shows like Meerkats. They are almost identical to human instincts. Using our instincts is the simplest, most omnipresent and ultimately reliable form of social organization--but it is also the crudest. This is why cults and gangs are only useful in small groups...their methods could never work on a larger scale. They were meant to be used among small tribes of hunter-gatherers on the savannah, of sizes of about 100-200 people only. Governments/religions are just about one step above them, in some ways. They operate on group sizes a lot bigger.

    Imagine trying to explain the difference between using the BIOS to do hardware access, vs. the Operating System.

    Gangs/cults are the BIOS of human society, always present, never used--except by idiotic and unsure programmers. The OS is still a work in progress....the choices are "Unix" aka Judaism (nice OS, but quirky and lacks a proper UI), "Windows" aka Christianity (nice interface, but the innards are messy and partly inherited from the Roman paganism) and "Linux" aka Islam (very conciously similar to unix, since they both have the same Semitic roots, but less proprietary and a lot more open, and it has a decent interface, though it has it's schisms with Ali ibn Abu Talib http://en.wikipedia.org/wiki/Ali being it's Richard Stallman.)

  20. "surgical" on Surgical Robot Removes Calgary Woman's Brain Tumor · · Score: 1

    The first time I scanned the headline...I thought it said "robot removes Calgary woman's brain."

  21. turn them into furniture/art on What To Do With Old Laptops? · · Score: 2, Interesting

    Take the circuit boards out, make your own computer cases out of wood, with dovetail joints and glossy finish, and sell them sans batteries as kitchen-table web browsing terminals.

  22. Re:Yet another approximation of reality on Black Holes Don't Trap Information Forever · · Score: 1

    That number got garbled, it's 1.85487117E43 Hertz.

    ps:

  23. Re:Yet another approximation of reality on Black Holes Don't Trap Information Forever · · Score: 1

    The real reality is this:

    The difference between any model of the universe and the real one, is similar to additive white gaussian noise, and it has a bandwidth of at most 1.85487117 Ã-- 1043 hertz (1/Planck time).

    If you want to know the real reality, look *beyond* the equations -- at the noise terms, the uncertaintites, the small finitely bounded quantities at the end of the expression which represent the uncertainty in the measurements, and the models. That is where you will find the real reality, if you want to plumb those depths.

  24. Re:Let the raging tardfight commence on Colossus Cipher Challenge Winner On Ada · · Score: 2, Funny

    Real men don't use constants. They express all quantities in their natural units, (such as the size of the known universe, or the diameter of a hydrogen atom). Needless to say, they do not require constants to convert the answers to meter-kilogram-second units.

    In fact better men than these do not even use equations. They let the laws of physics fall out of their simulations, as evanescent perennial relationships between variables.

  25. Re:I just played with both right now on Microsoft Launches WorldWide Telescope · · Score: 1

    20 milligram install? So that's where the missing mass of the universe is, it's the weight of all that Microsoft software.

    Maybe the mass of all the software bugs has something to do with it.