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Light changes its energy when it “falls” in a

Chapter 18, Problem 15E

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QUESTION:

Light changes its energy when it “falls” in a gravitational field. This change in energy is not evidenced by a change in speed, however. What is the evidence for this change in energy?

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QUESTION:

Light changes its energy when it “falls” in a gravitational field. This change in energy is not evidenced by a change in speed, however. What is the evidence for this change in energy?

ANSWER:

Solution 15E The speed of the light in the vacuum is a constant so the speed of the light will never change. When light travels in a gravitational field, the energy of the light changes. That is when

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