Very early in his thinking about relativity, Einstein asked himself what a person would observe if he or she kept up with a lightbeam. In answer to this question, the theory of relativity states that

A) this is not a valid question because a person cannot move as fast as a lightbeam.
B) the light beam would stand still and so time would stand still.
C) the observer would suddenly undergo a sex change.
D) the observer own would continue to observe the same laws of physics.
E) time would speed up without limit, and would pass at an "infinite" rate.


A

Physics & Space Science

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