[net.physics] Flickering train lights

gwyn@BRL@sri-unix (09/06/82)

From:     Doug Gwyn <gwyn@BRL>
Events simultaneous in one frame are not in general simultaneous in another.

One cannot beat special relativity through this kind of argument, so one
needn't waste time trying.

knutsen@SRI-UNIX@sri-unix (09/15/82)

From: Andrew Knutsen <knutsen at SRI-UNIX>
	The Michelson-Morley experiment is the oldest "proof" that
the speed of light does not change from one frame to another.
	The problem with the flashing train lights can be visualized
using the well-established length-contraction effect. The "track"
frame sees the train foreshortened, and the train sees the distance
between the lights on the track foreshortened. How can the lights
"line up"?