Das Prinzip des Seins

C. The IVES and STILWELL experiment.[5]

Ives and Stilwell measured the wavelengths of light emitted from moving and non-moving ionized hydrogen gas.

A beam of hydrogen jons in a vacuum tube was accelerated to a velocity which would yield a large enough Doppler shift of the spectrum to allow observation of the much smaller square shift.

The light from the ionized gas at rest, that from the approaching beam and that from the receding beam reflected by a mirror at the tube entrance was observed through a window at the end of the tube.

The photographed line spectrum showed the three lines of

l 0 + D l , l 0 and l 0 - D l

with l 0 displaced by the expected square shift from its exact location halfway between the Doppler shifted lines.

Remembering now that according to Ewald & Oseen[1] the incident radiation is absorbed and the energy which passes through the glass loses its relation to the incident wavelength and velocity, then:

At the inner face of the window, all three waves

l 0 + D l , l 0 and l 0 - D l

are absorbed and passed through the surface as

f0 = c / l 0
f1 = (c + v) / l 0
f2 = (c - v) / l 0

At the outer face of the window, the light is emitted again but this time with the same local velocity, c, for all three cases.

l 0 = c / f0 = l 0
l 1 = c / f1 = l 0 c / (c + v) = l 0 (1 - v/c + v²/c² . . . .)
l 2 = c / f2 = l 0 c / (c - v) = l 0 (1 + v/c + v²/c² . . . .)

Again, like in the case of the re-transmitted radio wave (item 2), the square shift is simply the result of an absorption of the free space wave by matter and re-transmission where the change of wavelength, hence, change of energy, is obtained from the momentum of the matter.

f_reflektor = f0*(c+v)/c

Es ist also nicht dienlich Erklärungen für nichtstattfindene Vorgänge, nämlich die Spiegelung nichtexistierender Transversalwellen zu veranschlagen.
Machs halt einfach und spiegle die ankommenden longitudinale Druckschwankungen einfach zurück. (dazu braucht man keine an den Haaren herbeigezogene Falscherklärung)