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Vuldoraq
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Homework Statement
A microwave detector is located 0.5m above the surface of a large lake far from the shore. As a star, emitting monochromatic microwave radiation of 21cm wavelength, rises slowly above the horizon, the detector indicates successive maxima and minima in the signal intensity. At what angle above the horizon is the star when the first maximum is received?
Homework Equations
Wave intensity, for a monochromatic plane wave;
[tex]\frac{1}{2}c\epsilon_{0}E_{0}^{2}[/tex]
The Attempt at a Solution
I am completely lost on this, I don't even know where to begin. If anyone could give me some clues or pointers I would be very grateful.
Thanks.