Conceptual Physics (12th Edition)

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

Chapter 35 - Reading Check Questions (Comprehension): 11

Answer

The ratio is the speed of light. What's special is that all observers will measure the same speed for light, no matter how they are moving relative to the source of light.

Work Step by Step

This is discussed on page 664.
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