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GALILEO THERMOMETER OR TERMOMETRO LENTOS<br />
Principle of Galileo's Thermoscope<br />
Specifically weighted bubbles float in a sealed glass cylinder. When temperature of the containing liquid changes, the glass balls rise or sink, staying where their density matches. The last bubble to rise to the top marks the temperature.

Fphoto-63070701D-6RM.jpg

GALILEO THERMOMETER OR TERMOMETRO LENTOS
Principle of Galileo's Thermoscope
Specifically weighted bubbles float in a sealed glass cylinder. When temperature of the containing liquid changes, the glass balls rise or sink, staying where their density matches. The last bubble to rise to the top marks the temperature.

Copyright:© 2007 Richard Megna - Fundamental Photographs

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