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User: positroniumman

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Comments · 16

  1. AWESOME! on Jet Engine on a Chip · · Score: 1

    this is totally the solution to our current energy problems! more gas burning engines...

  2. Re:It all depends on your needs... on Less Might Be More · · Score: 1

    ya, i mean with windows running, you can't access most of the processor anyway. Have you checked the difference in flops btw say a pentium 120 with win98 and a p4 with XP? you might be suprised by how little you can actually use.

  3. Re:Let's nip this in the bud right now on Less Might Be More · · Score: 1
    this is absolutely true, i mean look how good it worked for the opt-com community...

    remember them...

    remember when we were all going to have an 80gbit/s line to our toasters...

    those were the days...

  4. awesome! on Inflatable Spaceship Ready for Test · · Score: 1
    just think how much less time it will take NASA to get back to business whenever they lose a spacecraft!

    "in other news, NASA commented that the likely cause of crash was that they dropped a weighted baloon from space..."

  5. don't forget! on AbiWord vs. MS Word, For Now · · Score: 1

    LaTeX!!!

  6. n vs n ? on Revenge Really Does Taste Sweet · · Score: 1

    this doesn't have anything to do with changing the nature vs nurture arguement. anything we are taught to feel good about would cause the same release of endorphins. The experiment is interesting but i don't see how it has anything to do with NvsN.

  7. busted cables? on Space Elevator Prizes Proposed · · Score: 3, Informative
    now i thought that the amount of stresses in the cable meant that any type of space elevator would be unlikely without some very strong new material.

    for example, say i wanted to lift a 100kg man up to 380 km (ISS height). This would put a force of 1000N(the man) + 380km *area * density (of cable).area of say 30 cm^2 gives a force of 1000 +1140* density. failure is usually measured in stress (force per area) soooo lets see.....

    with
    material/stress/density steel 250Mpa 7850 kg/m^3 nanotubes 63GPa 3520kg/m^3 calculated stress steel = 2.9Gpa calculated nanotubes = 1.3 GPa

    SO nanotubes may handle the stress, but noone can make 380 km of nanotube rope yet. Even that much kevlar would be tough. and this is without incorporating the added stress of accelerating the man (starting his trip up the rope).

    In short, new materials are needed!

  8. Re:Care to define that? on Internet Meltdown Predicted for Tomorrow · · Score: 1

    gotta use the catch phrases or you get no funding;)

  9. Re:What a surprise on On Training, Recruitment Uses For Army Games · · Score: 1
    getting away from? the us airforce is already flying drones, its only a matter of time before we see the good old robo-armyguy!

    yes, now not only will the civilian public see a nice war via embedded fluff reporters, but the armyguys themselves will also miss out on the real wars. That is right, war with no consequences for the agressor.

    GW is gettin excited!

    No more worry of vietnam repeats! Oil everywhere free for the taking!

  10. cost???? on Cray CTO Says Cray Computers Are Great · · Score: 1

    now, perhaps i missed the point, but i can afford the beowulf cluster in my basement. But, i don't think i can afford even a used cray:p

  11. Re:Our gov't at work on Senator Blacklisted by No-Fly List · · Score: 2, Insightful
    yes... now imagine that you are not a white american citizen...

    A system where the errors cannot be reported has absolutely no chance of evolving to its own betterment!

  12. Re:Specific Ocean? on Writing Software for Worldwide Distribution Proves Difficult · · Score: 1
    I used to work for an englishman, and the only way he could explain the distances that are normal to us in north america to his contrymen was with the following
    "Flying from Toronto to Calgary for a meeting and then back is like flying from london to ciaro for the day."*

    *For the geographically challanged Toronto is near the middle of canada, and calgary is in the west, but neither are near our coasts ;)

  13. Re:Of course not! on Writing Software for Worldwide Distribution Proves Difficult · · Score: 1

    technically it is a south magnetic pole up here anyway...

  14. Re:A "light" transistor to the rescue! on Internet Heading to Light Speed · · Score: 1
    I don't mean human visual either, since most of this is in the micron range. also too bad because of the size of the wavelengths.

    The widths of the bits are the problem, they begin to overlap - too much overlapping of colour channels and all you see is on, not on off on off. So this is maybe what you mean by bonded together. This uses all of our bandwith to make pulses smaller in time, and we must forget about using all colour for switching. making the small pulses is relatively easy (femtosecond pulse width lasers are not uncommon) so this is the route taken.

    The real limitation of these schemes is the fact that waveguides (ie fiber) cannot be made "good" for a broad range of wavelenghts, this limits the amount of usable frequency space. then its down to whatever the reciever can detect for the number of colour channels that can be used.

  15. Re:A "light" transistor to the rescue! on Internet Heading to Light Speed · · Score: 1

    let me rephrase, in 32 channels (say) how wide (in time) must a bit be to get say 40 Gbit/s transmission rates?
    seems to me that width is quite small

  16. Re:A "light" transistor to the rescue! on Internet Heading to Light Speed · · Score: 1

    sigh, how many channels do you suppose you could get using a prism? think about the width of the pulse that actually carries the information. pulses in time must have frequency spread associated with them, the shorter the bits the bigger the spread in frequency. this is basically why colour schemes died along time ago. btw this is known as a photonic bandgap device, and it is not a new idea. Don't get me wrong, better efficiency is great, but it is still a looooong way from being a workable switch