Cecil Moore wrote:

In modern physics, the photon is the elementary particle responsible
for electromagnetic phenomena. It mediates electromagnetic
interactions and is the fundamental constituent of all forms of
electromagnetic radiation, that is, light. The photon has zero rest
mass and, in empty space, travels at a constant speed c;
According to the Standard Model of particle physics, photons are
responsible for producing all electric and magnetic fields, and are
themselves the product of requiring that physical laws have a certain
symmetry at every point in spacetime.

Nevertheless, all semiclassical theories were refuted definitively in
the 1970's and 1980's by elegant photon-
correlation experiments.

Sounds impressive. Are you running for office by any chance?


So, should momentum change? Or should we expect it to be conserved?


Momentum is conserved. A change in momentum is a change in
the direction of momentum, not a change in the magnitude.
Hams call that a reflection. What do you call it?

So is your claim that, to "hams", a change in the magnitude of
momentum is not called a change in momentum?

I still like "Cecil's 4th Mechanism of Reflection" best.


If you don't like the word "reflection" for what happens at
a non-reflective thin-film coating, please give me another
word for it. I could easily call the physical happening by
another name. "A rose by any other name ..."

Actually an antireflective coating does not reflect energy. Hence the
name. If I had to give it a name I guess I'd call it an
anti-reflection. Howz that?


Ask again after you've come to understand the difference between a
unit of measurement and a defined physical quantity.


Jim, in engineering, all watts are power. That's an engineering
convention. I'm sorry that your physicist conventions are different
but amateur radio is part of RF engineering. Sorry about that.

I get it that you're sorry. That wouldn't be rhetorical sorrow by any
chance, would it? As I said, please let us know when you come
understand the difference between units and physical quantities. I
don't need to give you the energy in 25 candy bars divided by the
number of minutes in a regulation NBA game example again, do I?

73, Jim AC6XG