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Thread: faster than light

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    Default faster than light

    Ok, forgive me for my lack of knowledge. I'm curious but uneducated.

    Anyway, I remember reading that light is technically a particle, and that they managed to weigh light. I'm not sure if this is true, please correct me if I'm wrong. That said, could there possibly be particles moving faster than the speed of light that we are simply unaware of? If something could move faster than light, could we even see it to identify it?

    Just musing on my day off

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    Also uneducated on the subject but I would assume we would still see it, just a past version of it.
    If I am not mistaken our vision is based on light and how it hits/reflects off objects.

    So, before our vision registers it, it will have moved on.

    That's assuming it is on a path headed directly at you and a light source was in place prior to it passing said source of light.

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    Everything that has properties aligned with the space-time continuum does not exceed the speed of light.
    There are some questions about a theoretical transmition of information faster than the speed of light in quantum dynamics. This must not be confused with mass or energy traveling faster than the speed of light. Basically as Energy and speed are connected, for a stable universe to exist, the speed of light must be a constant, that can not be exceeded. Otherwise, Energy would be permanently spawned from nothing and there would be no solid matter in the universe.
    The idea of letting mass travel through time or warp around (on a scale that exceeds the size of atoms) to our current understanding does not work. Science goes from the phenomenon to the theory to the method of observance. You don't just dream up stuff. This approach has no merit. That the universe works does grant us very close certainty to knowledge that time travel wont work. That sciency fluff talk about contrary speculations is tabloid fodder for people who wouldn't know that.
    Last edited by Ronin; 01-20-2014 at 11:25 PM.

    Stay frosty.

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    Shut Up, Dr. Who.
    It's more fun to guess.

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    Its more fun to know. There are enough spectacular and exciting things happening in reality than recreating some dorky scifi lit. Real time travel would be just as different from movies as real fights are from martial art flicks.

    Stay frosty.

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    Repped ronin. Thanks for the explanation.

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    think of time like a vase

    then smash it

    then chew on the glass shards

    now you know why you cannot exceed the speed of light.

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    There is a particle that travels faster than light... BUT both particles need to go through water for that to happen. It's slowed down less by water than light does and therefore travels faster.

    Just a stupid thing I once read on a flyer-like thing on the wall in the science class.

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    Yes. Some particles move faster than light in water. But that's because the photons slow-down. For actual conspiratorial stuff, look up tachyons.

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    Speed of light as in the constant speed of light, not whatever speed light happens 2 be going.

    Unrelated gif:

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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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    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 08:50 PM.

    Stay frosty.

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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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