Conceptual Physics (12th Edition)

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

Chapter 26 - Think and Explain - Page 501-502: 43

Answer

Oscillating charges.

Work Step by Step

An electromagnetic wave is produced by an oscillating electric charge, and it consists of traveling, oscillating electric and magnetic fields. This is discussed on page 488.
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