Jim Kelley wrote:
Cecil Moore wrote:
The irradiance reflection coefficient is 0.01
at both interfaces.

"It's a little known fact that cows were domesticated in Mesopotamia and
were also used in China as guard animals for the forbidden city."

air | 1/4WL thin-film | Glass
1W Laser---IR=1.0---|----IR=1.222-----|--IR=1.493---...
Ifor=1W | Ifor=1.0101W | Ifor=1W
Iref=0.01W | Iref=0.0101W | Iref=0

The reflectance (irradiance reflection coefficient) at
the air to thin-film interface is
[(1.222 - 1.0)/(1.222 + 1.0)]^2 = 0.01

The reflectance at the thin-film to glass interface is
[(1.493 - 1.222)/(1.493 + 1.222)]^2 = 0.01

1% of the irradiance is reflected at either surface and
99% of the irradiance is transmitted through the surfaces.

Would you like to engage in a technical discussion of
how non-reflective glass works or would you like to
keep avoiding that technical discussion?
--
73, Cecil, http://www.qsl.net/w5dxp