Recent content by zanadu

The problem is that B will always see the pulses from the lamps hit him at the same time in his frame of reference, as both the speed of the two light beams, and the distance of each lamp from him, are the same in his frame of reference.

First, thanks for the all the replies. Pardon me if I am mistaken, but summing up the replies, I have the following conclusions: 1. B will always be hit by both pulses at the same time, and will always observe both lamps firing up at the same time. 2. A will always observe the two...

what about the observer on the ground, the stationary one? Shouldn't he observe that one beam hits the middle first?

I believe in frame A the light from head of train hits B before light from tail of train not because the light moves faster, but because as the light travels, the train also travels, such that the light from the head of the train travels a shorter distance than the light from the tail of the...

There are two observers, A (stationary) and B (in the middle of a train moving towards A). At each end of the train is a lamp. At a point in time in the frame of reference of B, both lamps emit a pulse of light directed at B (middle of train). When the pulses hit B, they scatter in all...