University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 33 - The Nature and Propagation of Light - Problems - Discussion Questions - Page 1104: Q33.13

Answer

You need a source of plane-polarized light.

Work Step by Step

Suppose you know that the incoming light is polarized in a vertical direction. If you rotate the filter until the transmitted intensity is unchanged, the filter’s axis of polarization is also vertical. This is predicted by Malus’s law.
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