"Dr. Henri Wilson" HW@.... wrote in message
...
: Wormy, the doppler equation for sound doesn't apply to light.

Yes it does,

c - v
f' = f ----------
c

for sound from a passing railway station as heard from the train.

c
f' = f ------------
c-u
for sound of a passing train as heard from the station.

c-v
f' = f ------------
c-u

for sound of a train as heard from a car following alongside
the train on PA route 65 between Pittsburgh and Beaver, I've
heard it myself.

Doppler knew, you are an arsehole.