Conceptual Physics (12th Edition)

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

Chapter 27 - Think and Explain: 60


See below.

Work Step by Step

Particles in the smoke scatter blue light strongly. Against trees near the ground, which provide a dark background, you see the smoke as blue because you mostly see the light scattered by the smoke. When the smoke is backlit by a bright background (i.e., the sky), what you see is skylight minus the light that is scattered by the smoke. You see the complement of blue: yellow.
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