On Sun, Aug 31, 2025 at 3:13 AM Alan Grayson <agrayson2...@gmail.com> wrote:
> *in the case of light modeled as a photon, that is as a point particle, > where its wavelength is only detectable as an ENSEMBLE, there doesn't seem > to be a model for how the moving source produces the shift, red or blue. > That the shift occurs is statement of faith which is confirmed by > experiment,* *That statement makes no sense. If something is confirmed by experiment then there is no need for faith to believe it. * *but how exactly it occurs, that is the physical mechanism, seems unknown. * *Regardless of the precise physical mechanism involved, thanks to experiments we know for a fact that the Doppler Shift, as the name implies, can shift the wavelength of a single photon of light; from blue to red for example. And it's not just light, a shift in wavelength, and therefore energy, caused by the Doppler shift has also been detected for radio photons all the way up to gamma ray photons. And it's not just the Doppler Shift, in the Pound-Rebka experiment performed in 1959, a red shift in the wave function of a Gamma Ray photon was detected when it went up a 73 foot tube just as Einstein predicted. And a blue shift was detected in a photon when it went down the tube. These days gravitational red and blue shifts can be detected when the difference in elevation is less than an inch. * *> Moreover, in your claim about the wf of a photon, when I googled it, I > found that there's controversy about what that wf actually is. * *Well of course there is controversy, that's why there is no consensus on what the correct quantum interpretation should be. The wave versus particle debate started with Einstein's 1905 paper on the photoelectric effect and is still going strong to this day. The truth is in some ways a photon acts like a particle and in other ways it acts like a wave, if you find that fact to be distasteful too bad, that's just the way it is. * *And by the way, one thing that is NOT controversial and in which there IS a consensus is that expanding space will cause a photon of light to be red shifted. * *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* 0k. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/everything-list/CAJPayv0oOoEEYa8fuGQBcNhR0pWBg%2BHO6t-WFuBtAWisH0Q4_g%40mail.gmail.com.
