"K1TTT" wrote
...
On Jun 2, 2:12 pm, Cecil Moore wrote:

wave function solutions to maxwell's equations are enough to prove
that for me.

Not a loaded question: How do Maxwell's equations applied to a
standing wave prove that the component forward and reflected waves are
moving at the speed of light in the medium? If it can and if I can
understand it, I wouldn't need to use the photon argument.
--
73, Cecil, w5dxp.com

easy, maxwell's equations don't predict standing waves! they are a
product of superposition and the simplest instrumentation used since
they were first discovered.

"Kundt's tube is an experimental acoustical apparatus invented in 1866 by
German physicist August Kundt[1][2] for the measurement of the speed of
sound in a gas or a solid rod. It is used today only for demonstrating
standing waves and acoustical forces."

Heaviside wrote "Maxwell" equations" much later.

EM waves are the angular waves in the solid body. It would not be easy to
instal the mirror in such body.

You do not know that EM waves were stripped away in 1864.
The Maxwell's math is used in machinery to calculate the torsion vibration.
Maxwell predicted it:

"I propose now to examine magnetic phenomena from a mecha nical point of
view, and to determine what tensions in, or motions of, a medium are capable
of producing the mechanical pheno mena observed. If, by the same hypothesis,
we can connect the phenomena of magnetic attraction with electromagnetic
phenomena and with those of induced currents, we shall have found a theory
which, if not true, can only be proved to be erroneous by experiments which
will greatly enlarge our knowledge of this part of physics."

The hipothesis " be proved to be erroneous by experiments" but we have the
excelent math for thr solid body.
S*