Richard Harrison wrote:
Cecil, W5DXP wrote:
"If so, where does the inductance and capacitance in free space come
from to generate that 377 ohms of characteristic impedance?"

First, impedance is a voltage to current ratio as in Ohm`s law.

Thanks, Richard. The question was somewhat rhetorical and was aimed at
the people who believe that EM wave energy "sloshes" around in a
transmission line between the inductance and capacitance in the
transmission line and that there is really no forward EM wave energy or
momentum traveling at the speed of light and no reflected EM wave
energy or momentum traveling at the speed of light.

So I provided a mental example of a laser beam with reflections
demonstrating standing waves in free space. Except for the wavelength,
all field conditions are similiar to an RF transmission line with
standing waves. So how does the light energy "slosh" around without the
inductance and capacitance in free space?
--
73, Cecil http://www.qsl.net/w5dxp