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Finding the apeture

  1. Sep 5, 2007 #1
    1. The problem statement, all variables and given/known data


    What apeture is required to give 1-arcsec resolution for a wavelength of 500 nm(visible)

    2. Relevant equations

    theta=wavelength/d ; d is the size of the apeture

    3. The attempt at a solution
    I'm assuming when they are asking for the apeture , they are asking for the size of the apeture.

    theta=wavelength/d => d=wavelength/theta =

    I converted 1 arc second to 5*10^-6 radian

    d=500*10^-9 m/5*10^-6= .1 m
     
  2. jcsd
  3. Sep 5, 2007 #2

    learningphysics

    User Avatar
    Homework Helper

    Looks right to me.
     
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