Tim Wescott wrote:

Cecil Moore wrote:
http://www.qsl.net/w5dxp/weblaser.GIF

It doesn't show up on my web browser. Do you have the URL right?

Dang, you guys are fast. You must have caught it just as I was
downloading the simpler version. Please try again.

If you have actually set up this thin film experiment and measured two
seperate reflections then they are indeed there.

I probably could set up that experiment but right now I'm just
talking about it. I'm sure the angle of incidence could be
adjusted until both reflections show up as separate dots on the
retina. How much laser power will burn a retina?

In any case, essentially the same diagram is in any good physics
book. Page 1350 in "Sears and Zemansky's University Physics" by
Young & Freedman, Texas A&M custom edition. Page 505 in "Elements
of Physics" 2nd edition, by Shortley and Williams (c) 1955 :-).
--
73, Cecil http://www.qsl.net/w5dxp

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