Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 36 - Think and Explain - Page 698-699: 45



Work Step by Step

The path of a photon bends downward just as the path of a thrown baseball does, by the same distance in the same time interval. It is possible to make light follow a circular path, but because light is so fast, an extraordinarily strong gravitational field is required. Photons can follow a circular path at the event horizon of a black hole.
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