Conceptual Physics (12th Edition)

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

Chapter 28 - Think and Discuss - Page 542-543: 92


Horizontal incoming light/glare is reflected downward.

Work Step by Step

If bright light is coming into a window from around eye level, a normal, vertical store window reflects it back into a passerby's eyes, causing glare. (This is especially likely early or late in the day, when the sun is low in the sky.) However, if the store has windows that slant inward at the bottom, the light is instead reflected downward to the sidewalk.
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