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Homework Help: I am in need of a formula. (visible wavelength, thin film)

  1. Mar 31, 2008 #1

    If anyone could help me out it would be greatly appreciated.

    2nt = (m[+.5])[tex]\lambda[/tex]
    Last edited: Apr 1, 2008
  2. jcsd
  3. Mar 31, 2008 #2


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    What's the problem? You seem to have the right equation on hand.
  4. Mar 31, 2008 #3
    o yea sorry, the further question was;

    what would I use for m to achieve the minimum index? 1?

    As well, would I use the [+.5] or not, meaning destructive vs constructive.

    Those 2 were my detailed questions.
  5. Mar 31, 2008 #4
  6. Mar 31, 2008 #5
    M would have to be the smallest possible integer without the right-hand-side being less than or equal to 0.
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