In sci.physics, Richard Miller

wrote
on Thu, 25 Aug 2005 20:41:32 +0100
:

"Pup" wrote in message
.. .
"The Impossibility of Measuring the Velocity of Light"

"Great spirits have always encountered violent oppositions from
mediocre minds." - A. Einstein

oh no, here we go again. And I was almost looking forward to something
different.


I suspect he's indifferent to something different. :-)

As it is, the measurement of c isn't too difficult; the main
issue is making sure the experiment is rotatable so that one
can pick up anisotropic effects -- which turn out to be
a non-issue anyway, so it's optional.

The simplest conceptual measurement I can think of is from Fizeau,
who ran light through a rotating toothed wheel, a long pathway,
a mirror, back down the same pathway, back through the toothed
wheel, and into the viewer. At the right speed the toothed wheel
will allow the light coming out, but block the light going back.

This is of course a two-way lightspeed (TWLS) measurement.

I for one don't see an intrinsic problem with measuring c, nor do
I see why Eleaticus does.

--
#191,
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