faster than light

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  1. #11
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    Quote Originally Posted by Phenoca View Post
    Yes. Some particles move faster than light in water. But that's because the photons slow-down. For actual conspiratorial stuff, look up tachyons.
    Tachyons are the key to our future.
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    So, the speed is dictated by what it passes through...
    The "speed of light" is the speed the light travels without being slowed by matter.

    I have heard that light can not escape the gravitational pull generated by a black hole.
    That would indicate strength > speed.
    If the light particles were traveling directly toward the field would the pull not increase the speed?

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    In the Ender's Game series, they're trying to find a way to travel faster than the speed of light. They're unable to do so, but they eventually find a way to teleport themselves out of the universe and into a different dimension of sorts (away from our universe's laws of physics). They then teleport themselves back into the universe to a different spot than they originally started at, thereby traveling vast distances in a short amount of time and eliminating the need to travel faster than light.

    Yep.

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    omg spoilers
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    Quote Originally Posted by Loric View Post
    thereby traveling vast distances in a short amount of time
    So is it faster than light then? Otherwise they would have just been better of using a normal impulse propulsion engine.

    Quote Originally Posted by FarmerM View Post
    I have heard that light can not escape the gravitational pull generated by a black hole.
    That would indicate strength > speed.
    If the light particles were traveling directly toward the field would the pull not increase the speed?
    One might figure but that is not what happens. Light does not speed up or accelerate. How so? Since it has no mass. For a force to accelerate light, it needs a mass. What does really happen now? Well, it doesn't speed up or slow down, but it changes direction. Einstein described this as an effect of gravity being a "potential" of the space/time continuum. That kinda makes light change direction "like a ball rolling down the hill", since it tries to run on in a straight line, but that line ins time-spaceis twisted towards low potentials, which happens to be the manifestation of mass-induced gravity.

    Interestingly that means if light runs in an exact line away from a black hole, that line isn't twisted, which means that energy can escape from a black hole (in the way of mass-less photon waves).
    Stephen Hawkins first drew that conclusion and he became famous for it.

    You can see a black hole (if you have x-Ray vision). This is extremely interesting, because former interpretations suggested you couldn't ever find any trace of a black hole besides it's pulling force, which would not be measurable in interstellar distances, since the pulling forces of an even spread of black holes would nullify. (Edit: It would also black out the stars behind it, but that only would make discovery feasible by really "going there", not telescopes.)
    Last edited by Ronin; 01-21-2014 at 07:50 PM.

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  6. #16
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    Nothing can travel faster than light's potential speed, however there appears to be a loophole. By bending space, one can move at a normal no-faster-than-light speed while still traveling further than light could in that same amount of time (except for light that's also passing through that bent space, because it's still faster).

    There've actually already been some promising results to some of these "warp" experiments, it's definitely worth looking up.

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    Faster than light = time travel???

    Currently Playing: Eldevin

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