Conceptual Physics (12th Edition)

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

Chapter 36 - Think and Explain: 26


The bending of light due to gravity is unnoticeable for short distances.

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. However, light travels so fast (roughly a foot per nanosecond) that in crossing a 10-meter wide room, taking a time of $t = 3.3 \times 10^{-8} s$, it would only drop about $5.4 \times 10^{-15} m$, roughly a thousandth the size of an atom.
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