Re: speed of light
"Merlyn" <david.furlong@xxxxxxxxxxxx> wrote in message
news:ftege.29915$B82.713173@xxxxxxxxxxxxxxxxxxxxxxxx
> If two photons are moving toward each other in one dimension, how fast
> does an observer see the space between them diminish?
One does not "see" the space diminish.
Instead, one observes the events of photon emissions
and absorptions at specific locations and times. As
calculated from measured distances and time intervals,
the unobserved and unobservable closing speed is 2 c.
[Old Man]
.
Relevant Pages
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