Jim Kelley wrote:
Good grief, Cecil, irradiance isn't a field and doesn't propagates
either!

As I said earlier, irradiance is proportional to the cross product
of the E-field and B-field. Why do you think we call them fields
if they are not fields?

Exactly how does the irradiance from Alpha Centauri get to
us without propagating? Methinks you are playing word games.
--
73, Cecil http://www.qsl.net/w5dxp