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  1. Oct 21, 2008 #1
    One of my prelab problems for physics 3:

    The Moon is about 4*10^8 m from the Earth and has a diameter of about 3.2*10^6 m. You want a radar antenna which just covers the Moon with the central spot of its diffraction pattern. If the radar wavelength is 10 cm, what is the diameter of the radar antenna?
  2. jcsd
  3. Oct 21, 2008 #2


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    You must make an attempt at solving the problem before receiving help.

    What equation or equations do you have that deal with diffraction?
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