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Faster Than The Speed of Light?

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Imagine that you are suspended in empty space (so there is no gravity) and you can see two stars that are three light years distant and one light year apart. you could point from one to the other in a matter of seconds but suppose you were holding an incredibly long pole that reached almost all the way to one of the stars but not far enough to be affected by it's gravity. Surely it would still take seconds for you to move your hand (and the pole as well) between the two stars but the end of the pole would have to be traveling faster than the speed of light for it to move between them so quickly. However, according to Einstein's theories of relativity nothing can travel faster than the speed of light so what would happen?

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  • Asked by Elthron
  • on 2010-05-17 17:35:59
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Categories: Our universe.

Tags: Speedoflight, faster, pole.

 

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Stopping Light

It is already possible to stop light in extremely low temperature BEC (Bose- Einstein Condensate) But, if i took say, a space ship and travelled at 300,000 meters per second (The speed of light in a vacuum), relative to Earth, and mounted a light on the back, would the light travelling in the opposite direction to the ship, be travelling at the same speed as the Earth?

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Categories: Our universe.

Tags: light, Space, speed, Speedoflight, lightspeed.

 

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Is it ever possible to slow down light so it travels at speeds a human could observe?

SInce light slows down in mediums, would it ever be possible to slow light down to a speed where a human could observe its movement?

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  • Asked by RobbieA
  • on 2010-03-12 21:32:47
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Categories: Our universe.

Tags: physics, light, speed, Speedoflight.

 

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FTL travel

If time slows for the observer as they approach the speed of light, would it stop all together if you actually attained light speed, effectively resulting in instantanious travel anywhere in the universe? What if you exceeded it? does time actually move backward or would the "direction" of time travel be dependant on your direction of movement?

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  • Asked by Jeff&ang
  • on 2010-02-03 20:00:08
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Categories: Our universe.

Tags: Speedoflight, Timetravel, FTLtraveling.

 

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car headlights speed

if your in a car moving at 60mph and you turn the headlights on does that mean that the light from the headlights is moving 60mph faster than the speed of light

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Categories: Our universe.

Tags: Speedoflight.

 

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Does travelling at the speed of light stop you from aging as compared to being stationary?

Regardless of whether we travel at the speed of light or not, should our cells not biologically age and decay as per normal? Do we not have an internal biological clock that keeps ticking? Is Einstein proposing that our body will suffer less aging effects when travelling at the speed of light? Someone please help explain this.... 

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Categories: Human Body, Our universe, Transport.

Tags: relativity, Speedoflight, Biology, Aging.

 

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Light Speed

Can light go faster, or slower, than light speed? If so, what do we call that speed?

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  • Asked by jminton
  • on 2009-08-08 04:22:48
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Last edited on: 2009-08-08 04:25:09

Categories: Our universe.

Tags: physics, light, Speedoflight.

 

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Is faster than light communication possible??

Using a pole which is 1 light year long and with a person at each end of the pole who is able to push the pole so that it hits against a plate on the opposing end. Would it be possible for them to communicate using morse code and would the message be transmitted faster than the speed of light ??

I know the pole doesnt necessarily need to be that long but its a good example.

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  • Asked by haydn
  • on 2009-07-30 23:05:28
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Categories: Domestic Science.

Tags: Speedoflight, faster.

 

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What would warp speed actually look like?

I've seen many CG fly-through videos of stars and galaxies which provide awe-inspiring viewing. Watch just about any episode of Star Trek too and you will see stars rushing by at warp speed. Obviously in the former example, no object could travel as fast the hypothetical speeds of the 'viewer' in these videos (unless we could assume it's a slide-show of instantaneous transporting from one point to another), and in the latter warp speed has yet to be achieved. But I was wondering what warp speed would actually look like? If stars and galaxies are emitting light that has taken vastly different periods of time to reach one point in the universe, how would it look to the person travelling at warp speed if he or she were traversing these 'points' at much faster speeds than light? (Assuming that light can be seen at warp speed.)For example, if we were to somehow "travel" (our slide-show of instantaneous transporting from one 'slide' to another) so fast that we could reach our nearest galaxy, Andromeda, within an hour, we would surely see it evolve at an unprecedented rate since each point on our path we would be reaching light emitted nearer the present. If we take this example and apply it to those CG fly-through videos, would we -in effect- be traveling through time as well as space? Would we see objects in front of us evolve and objects that have passed us de-evolve? (Again, if we assume we are travelling through space as though we were flicking through a slideshow rather than actual motion where I'm sure Einstein's special theory of relativity would have something to say on the matter.)

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Last edited on: 2009-07-24 20:23:21

Categories: Our universe.

Tags: Universe, Speedoflight, Galaxy, Warp.

 

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