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Galileo Thermometer 4x15
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Galileo Thermometer 4x15
From The Box:
Galileo Thermometer
Based on an idea by Galileo Galilei (1564-1642)
History
Searching for a way to measure exact
fascinating method. He placed several exactly weighted balls in a cylinder filled with a certain liquid. He found that the balls rose or fell according to the current temperature. By this method, he was able to determine the correct temperature.
How it Works
This thermometer works on the principle discovered by Galileo that the density of a liquid changed as temperature varies. Each of the glass balls is exactly weighted by partially filling the spheres with liquid. When the temperature rises, the liquid in the glass cylinder becomes less dense, and the heavier balls sink slowly to the bottom.
the size of this instrument is about 4" by 15" by 2"
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