John Smith I wrote:
I was unaware that anyone had proved the "absolute" existence of
photons, beyond mathematical formula and "interpreted" experiments ...

A Google search for "existence of photons" turned up
more than one million entries. The existence of photons
has been proved to my satisfaction. They have been
captured on sub-atomic particle plots and have been
proved to obey Planck's quantum principle. A single
photon has been shown to interfere with itself during
double slit experiments. A photon certainly exists but
I am not "absolutely" certain of exactly what it really
is as photons possess the particle-wave duality. However,
so do electrons and massive 60 atom carbon Buckyballs.
So how can 60 carbon atoms go through two slots at the
same time?

Here's one of the photon experiments.

http://people.whitman.edu/~beckmk/QM.../grangier.html
--
73, Cecil http://www.w5dxp.com