"H. Adam Stevens" wrote in message
...

"H. Adam Stevens" wrote in message
...

"Cecil Moore" wrote in message
. net...
H. Adam Stevens wrote:
"coherent photons" It's a laser? Cool.

Surprise! Our $100 RF transmitters emit coherent photons just
like a $100,000 laser. Maybe we should call them RASERs. :-)
Do you remember MASERs?
--
73, Cecil http://www.w5dxp.com

"transmitters emit coherent photons "

Sure Cecil.

And the laser pointer I use was a bit less expensive.

MASER: Microwave Amplification by Stimulated Emission of Radiation

"The fundamental physical principle motivating the MASER is the concept
of stimulated emission, first introduced by Einstein in 1917. Before
defining it we look at two related but more familiar phenomena involving
the interplay between matter and radiation, absorption and spontaneous
emission."
http://einstein.stanford.edu/content/faqs/maser.html

"MASER. In each frame, a molecule in the upper level of the MASER
transition (that is, in the high energy, excited state) is indicated by a
large red circle, while one in the lower level (low energy state) is
indicated by a small blue circle. (a) All of the molecules are in the
upper state and a photon of wavelength l (shown in green) is incident
from the left. (b) The photon l stimulates emission from the first
molecule, so there are now two photons of wavelength l, in phase. (c)
These photons stimulate emission from the next two molecules, resulting
in four photons of wavelength l. (d) The process continues with another
doubling of the number of photons."

Stimulated Emission of Radiation is a quantum mechanical effect that has
exactly zero to do with HF radio.
For microwaves we use molecules, for light we use atoms.

73
H.
NQ5H


"Waves of average nausea" is more like it.

Come to think of it.
Coherent photons at HF would make a remarkable (laser like?) antenna
pattern.

73

Roy
Love your product.

H.
NQ5H



just because a source of photons is coherent doesn't mean the photons are
collimated.