Conceptual Physics (12th Edition)

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

Chapter 27 - Think and Explain: 56

Answer

You can get a sun­burn even while sitting in the shade, by reflection and scattering.

Work Step by Step

Ultraviolet light is reflected by sand and also scattered by particles that make up the atmosphere (in fact, uv is scattered even more than visible light is scattered). The indirect exposure to uv light gives you the sunburn. This is discussed on pages 511-512.
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