This is kind of a dumb question, but here's a thought that occurred
to me.
In the Newtonian realm, one can differentiate between the following
three concepts, when it comes to light propagation.
[1] Light speed.
[2] Wavelength.
[3] Frequency.
One of the reasons a prism works is because the speed of light in
the prism varies as a function of wavelength (and of refractive
index). A diffraction grating works on different principles and
does not vary according to lightspeed, but only varies depending
on the light wavelength.
In SR, at least in vacuo, lightspeed is constant and the other
two relate thereto (wavelength = c/frequency); furthermore, one
can, using QM, add other things such as the energy of a single
photon.
So here's the question. Has anyone carefully calibrated both
a prism and a diffraction grating to a set of stationary light
sources (mercury, sodium, hydrogen, etc. etc.), then pointed
the pair of them at a light source (probably astronomical) that
is known to be moving?
And would such an experiment show strong evidence for SR? Or is
there a mathematical / physical issue that would preclude drawing
any conclusions at all, similar to the MMX being unable to differentiate
between nBaT (or BaT) and SR using a stationary light source?
--
#191,
It's still legal to go .sigless.
.
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