1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Inclined Glass Wedge Diffraction - Help !

  1. Apr 21, 2012 #1
    1. The problem statement, all variables and given/known data
    Monochromatic beam of incident light on the surface of the glass wedge,
    whose upper edge is inclined at an angle of γ = 0.05 ° from the base. In reflected light
    observe a number of interference fringes, the distance between adjacent
    dark streaks is △X = 0.21 mm. Calculate the wavelength λ of the incident light.
    Refractive index of glass n = 1.5.

    2. Relevant equations
    [tex] d \sin \alpha = n \lambda [/tex]

    3. The attempt at a solution
    I need a guidance ! Is it a thin-film problem ?
  2. jcsd
  3. Apr 21, 2012 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    Need a picture of this setup.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook