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CE Day Versus Night (a) Imagine for a moment that the

Chapter 26, Problem 47P

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QUESTION:

Problem 47P

CE Day Versus Night (a) Imagine for a moment that the Earth has no atmosphere. Over the period of a year, is the number of daylight hours at your home greater than, less than, or equal to the number of nighttime hours? (b) Repeat part (a), only this time take into account the Earth’s atmosphere.

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QUESTION:

Problem 47P

CE Day Versus Night (a) Imagine for a moment that the Earth has no atmosphere. Over the period of a year, is the number of daylight hours at your home greater than, less than, or equal to the number of nighttime hours? (b) Repeat part (a), only this time take into account the Earth’s atmosphere.

ANSWER:

Step 1 of 3

Suppose that the Earth has no atmosphere, and we are viewing the Sun from Earth's surface. Now consider the effect that atmospheric refraction has upon the observed length of a day.

(a) In the case of no atmosphere, the number of daylight hours will be equal to the number of nighttime hours over the period of a year,

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