Conceptual Physics (12th Edition)

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

Chapter 35 - Think and Discuss: 92


The examples given are not material things, nor can any information be transmitted by these events.

Work Step by Step

Special relativity says that no material thing can move faster than light. The intersection points named are not things. Furthermore, there is no energy or information moving faster than light - in other words, these schemes do not provide a way to send a faster-than-light signal from one location to another. In summary, special relativity bans the transmission of energy, particles or information at speeds greater than the speed of light, c. These examples do not contradict special relativity.
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