On the Moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. Assume the distance to the Moon is precisely 3.84 × 108 m, and the Earth's atmosphere (which varies in density with altitude) is equivalent to a layer 30.0 km thick with a constant index of refraction n = 1.000293. What percent correction is needed to account for the delay in time due to the slowing of light in the Earth's atmosphere?

The formula: can be used to calculate the time delay in the Earth's atmosphere.

Answered: On the Moon's surface, lunar astronauts…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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On the Moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. Assume the distance to the Moon is precisely 3.84 × 10⁸ m, and the Earth's atmosphere (which varies in density with altitude) is equivalent to a layer 30.0 km thick with a constant index of refraction n = 1.000293. What percent correction is needed to account for the delay in time due to the slowing of light in the Earth's atmosphere?

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