A Galileo thermometer is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying densities. As temperature changes, the individual floats rise or fall proportion to their … The bulbs differ in buoyancy by a very small amount and are ordered such that the least dense is at the top and densest at the bottom so that they form a temperature scale. The temperature is typically read from the metal disc hanging from each …
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P&R Labpak Limited: The Galileo Thermometer