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Thin Films again - Help?

  • #1

Homework Statement



A camera lens (n = 1.90) is coated with a thin film of magnesium fluoride (n = 1.40) of thickness 90.0 nm. What wavelength in the visible spectrum is most strongly transmitted through the film?


Homework Equations



?

The Attempt at a Solution



I have no idea where to start, is there an equation that will use both n's at once?
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
5
Search in Google for thin film interference.
 

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