Koobee Wublee wrote:
On Feb 6, 12:01 am, "Jeckyl" wrote:
"Koobee Wublee" wrote:

And which experiment is that?
Experiments showing the wavelength of light from istant starts if Doppler
shifte

What experiments again?

Any observation where the spectral lines are shifted.
Which they are to some degree in most observed spectra.
A diffraction grating spectrometer measures wavelength.

--
Paul

http://home.c2i.net/pb_andersen/