Estimate the angular spread of a laser beam due to
Chapter 28, Problem 44(choose chapter or problem)
Estimate the angular spread of a laser beam due to diffraction if the beam emerges through a 3.0- mm-diameter mirror. Assume that What would be the diameter of this beam if it struck (a) a satellite 340 km above the Earth, or (b) the Moon? [Hint: See Sections 245 and 257.]
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