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If you were watching a friend (or better still, an enemy!) who is near the event horizon of a black hole, what would you measure as his heartbeat? It would appear to have sped up to an incredible rate because gravity is pulling so hard on it. It would appear to have slowed down owing to time dilation in the strong gravity. It would appear to be normal because gravity has no effect on time intervals. It would appear to be zero, his heart would appear to have stopped.

If you were watching a friend (or better still, an enemy!) who is near the event horizon of a black hole, what would you measure as his heartbeat? It would appear to have sped up to an incredible rate because gravity is pulling so hard on it. It would appear to have slowed down owing to time dilation in the strong gravity. It would appear to be normal because gravity has no effect on time intervals. It would appear to be zero, his heart would appear to have stopped.

Applications and Investigations in Earth Science (9th Edition)
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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If you were watching a friend (or better still, an enemy!) who is near the event horizon of a black hole, what would you measure as his heartbeat? It would appear to have sped up to an incredible rate because gravity is pulling so hard on it. It would appear to have slowed down owing to time dilation in the strong gravity. It would appear to be normal because gravity has no effect on time intervals. It would appear to be zero, his heart would appear to have stopped.
Transcribed Image Text:If you were watching a friend (or better still, an enemy!) who is near the event horizon of a black hole, what would you measure as his heartbeat? It would appear to have sped up to an incredible rate because gravity is pulling so hard on it. It would appear to have slowed down owing to time dilation in the strong gravity. It would appear to be normal because gravity has no effect on time intervals. It would appear to be zero, his heart would appear to have stopped.
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