Tom Donaly wrote:
Whatever. I'd still like to see his derivations.
"Optics", by Hecht, 4th edition, page 289.
The intensity of a light beam is associated with the E-field
so Hecht's equations are in relation to the E-field.
Speaking of the light standing wave: "The composite
disturbance is then:
E = Eo[sin(kt+wt) + sin(kt-wt)]
Applying the indentity
sin A + sin B = 2 sin 1/2(A+B)*cos 1/2(A-B)
E(x,t) = 2*Eo*sin(kx)*cos(wt)"
Hecht says the standing wave "profile does not move through
space".
I have said the RF standing wave current profile does not move
through a wire.
Hecht says the standing wave phasor "doesn't rotate at all,
and the resultant wave it represents doesn't progress through
space - it's a standing wave."
I have said the same thing about the RF standing wave current
phasor.
Hecht says the standing wave transfers zero net energy. I have
said the same thing about RF standing waves.
--
73, Cecil
http://www.qsl.net/w5dxp