2007-06-05 05:03:46 · 4 answers · asked by Alexander 6 in Science & Mathematics ➔ Physics
Possible, yes, but what we observe is not consistent with a significantly changed value of c unless a whole slew of other things changes along with it.
2007-06-05 05:06:48 · answer #1 · answered by Anonymous · 3⤊ 1⤋
Some believe that in the earliest nanoseconds of the big bang, light travelled at a different speed. See Magueijo's book for an excellent and fascinating explanation of this theory.
2007-06-05 14:52:28 · answer #2 · answered by Frank N 7 · 0⤊ 0⤋
Einstein _postulated_ the speed of light in a vacuum to be a constant. That means that he accepted it as true without any proof. Validity of a postulate comes only from predictions made as a result of theories that employ the postulate.
Einstein's theories have done pretty well so far. But Newton's work held up darned well for quite a while also. So it remains possible that Einsein got closer to the right answer but isn't all the way there yet and, under some conditions, the postulate of constant speed of light may be invalid.
2007-06-05 12:21:50 · answer #3 · answered by dogsafire 7 · 2⤊ 0⤋
No the speed of light cannot change. It's constant according to Einstein's relativity
2007-06-05 12:14:47 · answer #4 · answered by Anonymous · 0⤊ 2⤋