- #1
BobbyBobbyBob
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A thin film of ethyl alcohol (n=1.36) is spread on a flat glass plate and illuminated with white light. When illuminated and viewed from directly above, it shows a coloured pattern in reflection. If the only visible light reflected by a certain region of the film is yellow (lambda=560nm), how thick is the film there? Justify (assume visible spectrum is 400-7800nm)
I have no idea where/how to start and what it involves.
I have a feeling it invovles Huygen's Principle and Polarization by Reflection.
I have no idea where/how to start and what it involves.
I have a feeling it invovles Huygen's Principle and Polarization by Reflection.