  The analysis of the Doppler effect for photons in rotating systems, studied
using the M\"ossbauer effect, confirms the general conclusions of a previous
paper dedicated to experiments with photons emitted/absorbed by atoms/nuclei in
inertial flight. The wave theory of light is so deeply rooted that it has
been--and currently is--applied to describe phenomena in which the fundamental
entities at work are discrete (photons). The fact that the wave theory of light
can describe one aspect of these phenomena can not overshadow two issues: the
corpuscular theory of light, firstly applied to the Doppler effect for photons
by Schr\"odinger in 1922, is by far more complete since it describes all the
features of the studied phenomena; the wave theory can be used only when the
number of photons at work is statistically significant. The disregard of basic
methodological criteria may appear as a minor fault. However, the historical
development of quantum physics shows that the predominance of the wave theory
of radiation, beyond its natural application domain, has hampered the
reorientation toward the photon description of the underlying phenomena.
