Answer
free electrons
Work Step by Step
Glass has free electrons, while fiberglass does not have as many free electrons. Free electrons allow for more effective energy transfer, so this characteristic accounts for the difference.
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 16 - For Thought and Discussion - Page 299: 11
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