Jim Kelley wrote:
Cecil Moore wrote:

It just goes to show that people who believe they know everything
rarely know anything.

That's probably a bit of an overstatement. But they certainly can be
annoying.

Again, I post the Hecht and Born & Wolf equation for intensity-
irradiance, which is certainly an equation involving scalar values.
Please answer the question: Why do Hecht and Born & Wolf insert a
cosine term into their scalar intensity-irradiance equations? If
it is OK for them to do it, why is it not OK for me to do it?

Itot = I1 + I2 + 2*SQRT(I1*I2)*cos(A)

You seem to think the act of inserting a cosine term into a
scalar equation is an abomination. Please explain that criticism
of Hecht, Born & Wolf, and me. It's past time to put up or shut up.
--
73, Cecil http://www.w5dxp.com