: : If i have two light-source, A and B. : : A send light C1 and B send light C2.

: : B.....C2.....C1.....A

: : What happens when light meets?

: : B.......C3........A.

: : C1+C2 join together, and result is C3.

: : What is speed of C3?

: what do you mean, what is the speed of C3?

: If i understand what your asking, your saying : that when two light beams are aimed at eachother : and they meet; what is the speed at the meeting : point?

: i'm not sure what your asking.

: the speed of two passing beams is irrelevant. : however, it is more interesting to note that : the observed velocity of light passing by, while : traveling the opposite direction, (at or near the : speed of light), will appear that the light : passing by me is not the sum of my velocity : and the light passing. But rather the light passing : by would appear the normal velocity of lightspeed. : This is relativity.

Indeed-- u'=(u+v)/(1+uv/c2) {according to the STR) Thus, as u=v=c, u'=(u+v)/2=c ergo de facto-- both beams will go towards one another at the speed of light -- c. Einstein made his own conclusions due to this numeric calculations on 1905-- the result was the Special Theory of Relativity... A question worthwhile.

• Re: ((space)) time - Is it so. - December 7, 1998 - 00:20 UTC
• Re: ((space)) time - meva/">meva - June 1, 1999 - 17:13 UTC