LECTURE DEMONSTRATION MANUAL | Instructional Research Lab : ucla physics
Galileo's Air Thermometer

T.2.4 Galileo's Air Thermometer

A flask of air connects at the bottom to a column of water. When the flask is heated by your hand, the air expands and the water falls. When it is cooled by evaporating alcohol, the air contracts and the water rises. Why doesn't this make a good thermometer? (It also responds to barometric pressure.)

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