A laser beam is directed at the Moon. 380.000 km from

Chapter 8, Problem 3

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QUESTION:

A laser beam is directed at the Moon. 380.000 km from Earth. The beam diverges at an angle 0 (Fig. 8-37) of 4X 10-5rad. What diameter spot will it make on the Moon?

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QUESTION:

A laser beam is directed at the Moon. 380.000 km from Earth. The beam diverges at an angle 0 (Fig. 8-37) of 4X 10-5rad. What diameter spot will it make on the Moon?

ANSWER:

Step 1 of 3

To determine the diameter of the spot that the laser beam will make on the Moon, we can use the concept of angular diameter and basic trigonometry.

The angular diameter of an object is the angle it subtends at the observer's location. In this case, the laser beam diverges at an angle of  ,

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