It's not that information is or is not, but that information reception is relative.Īre there any Earth-scale examples? Check out Quantum Entanglement. So, while many observers could record the information you beam out from your spaceship, your friend can't. Consequence: If you're moving at 0.6 the speed of light in one direction, and your friend is moving at 0.6 the speed of light in the other direction, how could you transmit information to one another? There's no mode that will make up the growing distance between the two of you. (Though it seems never to be explained that way.) The amazing bits above simply put a speed limit on the universe: nothing moves faster than the speed of light. On the other hand, the 'no information faster than the speed of light' is a bit straightforward. A sort of *if* particles or spaceships move in a consistent way, then the ticking of ones clock or the measuring of distances must appear to change with velocity. It's amazing because this same principle, when incorporated into our daily interactions with objects moving relative to one another, leads to the mind-bending Theory of Special Relativity. Inflation is one example of an instance where an omnipotent observer could pick out two particles in the universe and say, 'these are traveling apart from each other at faster than the speed of light.'īut appreciating why 'no information can travel faster than the speed of light' is a bit amazing and a bit mundane. But two particles can travel away from each other (for instance during the expansion of the universe) at faster than the speed of light. I read that objects could move faster than the speed of light (as long as no information is delivered during the process).
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