Day 258: Galileo thermometer

“A Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying densities. As the temperature changes, the individual floats rise or fall in proportion to their respective density. It is named after Galileo Galilei because he discovered the principle on which this thermometer is based—that the density of a liquid changes in proportion to its temperature—and he also invented a thermoscope based on this principle.” To read more click here

22 thoughts on “Day 258: Galileo thermometer

  1. Dear Jackie, once again I want to Thank you, my Gallileo thermometer came today… It is so nice, I am like a child now. I will take its photograph later. Have a nice weekend, Love, nia

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