Glass Galileo Thermometer with Floating Spheres

This is a Galileo thermometer, a type of thermometer that measures temperature based on the principle of buoyancy. The thermometer consists of a sealed glass cylinder filled with a clear liquid and several floating glass spheres. Each sphere has a small metal tag with a different temperature on it. As the temperature of the surrounding liquid changes, its density also changes, causing the spheres to either rise or fall. To read the temperature, you look at the lowest floating sphere, or the sphere in the middle of a group of floating and sunken Material: glass metal Sustainable features: Vintage Small metal decorative vessels of different densities floats in liquid "The Galileo thermometer is made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The individual floats rise or fall in proportion to their respective density and the density of the surrounding liquid as the temperature changes. It is named after Galileo Galilei because he discovered the principle on which thermometer is made. Vessels have charms move according to their density: and move arround according to the heat density • Yellow:64 Degrees Fahrenheit Red:78 Drgree Fahrenheit Blue :68 Fegree Fahrenheit