The distance from Earth surface to Moon surface is: 3.8*105 [Km]. What beam divergence is needed for a beam to expand to 1 [Km] diameter on the surface of the moon?
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![Question 7.1: Measuring the Distance to the Moon
12
The distance from Earth surface to Moon surface is:
3.8*10$ [Km].
What beam divergence is needed for a beam to expand to 1 [Km]
diameter on the surface of the moon?
Estimate:
The power density needed for the initial pulse on Earth.
The power density on the moon.
The power density detected on Earth from the reflected beam.
The diameter of the mirror (Comer cube) the astronauts left on
the moon is about I meter](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47a8c2cb-9079-4503-b2a7-0fbc6ba41ea3%2Fa62feef1-4cb4-4913-b3a2-f81a0036bb72%2Foouy4z_processed.jpeg&w=3840&q=75)
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