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superspartan9
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Homework Statement
"Light is incident from above two plates of glass separated on both ends by small wires of diameter d = .6um. Considering only interference between light reflected from the bottom surface of the upper plate and light reflected from the upper surface of the lower plate, state whether the following wavelengths give constructive or destructive interference: λ = (a) 600 nm (b) 800 nm (c) 343 nm.
Homework Equations
Phase = (2m + 1)*pi for destructive interference, Phase = mλ for constructive interference, Phase constructive = 0 + 2N*pi, Phase destructive = pi + 2N*pi
The Attempt at a Solution
Looking at this problem, I can tell that when the light goes through the first plate into the air pocket between the two plates, there will be no phase shift because the index of refraction decreases between the mediums. When the light hits the second plate, there will be a phase shift of pi (if I understand reflection right, my professor is really bad at explaining these things). Beyond this, I'm stuck...
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