Essential University Physics: Volume 1 (4th Edition)

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 16 - For Thought and Discussion - Page 309: 3

Answer

The temperature of the air.

Work Step by Step

We know that the thermometer will reach thermal equilibrium with the surroundings, so it will eventually display the temperature of the surroundings. Thus, it displays air temperature, not sun temperature.
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