Conceptual Physics (12th Edition)

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

Chapter 28 - Think and Solve: 41


A double-paned window (two sheets of glass) will pass about 85 percent of the incident light.

Work Step by Step

We know that 92 percent of the incoming light is transmitted through the first pane. Then, 92 percent of that amount is transmitted through the second pane. $$(0.92)(0.92) = 0.8464$$ We calculate that 84.6 percent is transmitted through both panes of glass.
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