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Faster than Light
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Okay kids, any more questions on today's quick physics lesson?
A scientific genius, and the general theory of relativity. Great questions!
So who was Einstein? And what theory in this lesson did he create?
Can you race alongside a light beam?
No. Einstein said that you can never race alongside it because since it always moves away from you at constant speed.
Can things move faster than the speed of light?
This is controversial. Say you're in a rocket, if you are moving that fast, then the time inside it would stop and the ship would be nothing.
This doesn't make sense, so Einstein said nothing can really break the light barrier.
Space-Time is a fabric that can shrink and stretch. It can stretch faster than the speed of light. To do this, one will have to invoke general relativity.
What happens to time in space? Does it remain the same?
Is the energy used to power such high speeds positive power or negative power?
Usually positive energy is used, but negative energy needs to used in order to move faster than the speed of light. It exists, but only in small amounts that are rare.
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