We presented our solutions to Ch 24 P: 1-5 today, and it went nicely. Following that we considered light reflected from thin films like soap bubbles. It turns out the it is similar to two-slit interference, because there are two places where the coherent light comes from on its way to our eyes, namely, the front surface and the back surface of the thin film. That means that light waves reflected from the front surface might be out of phase (i.e. out of step) with light reflected from the back surface. Or it might be IN phase, depending on the thickness of the film and the wavelength of the light.
In any case, one gets some nice interference patterns. Comments are closed.
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Physics IIMr. Swackhamer Archives
May 2019
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