Galileo's air thermometer forces liquid down when heated.
4E10.11 • C+75+15
Galileo's air thermometer forces liquid down when heated. Heat the bulb with a hair dryer set on 'hot', or cool the bulb with the hair dryer set on 'cool' to show the change in the height of liquid in the column. Alternatives: Use the heat of a hand, or a cloth dipped in ice water.
Related Demos
C+75+0 Measurement of temperature: Various types of thermometers. C+75+5 Transparency: Comparison of F deg , C deg , and K temperature scales. C+75+10 Transparency: Chronological history of the concepts of heat. C+75+20 Liquid Crystals: sheet changes colors with body temperature. C+75+25 Galilean thermometer