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Galileo Thermometer - History
Galileo Galilei (1564-1642) discovered that the density of liquids change as the temperature varies. This scientific principle has become an elegant and functional work of art; The Galileo Thermometer. When the temperature rises, the liquid in the glass tube becomes less dense, causing the floating glass spheres to sink one by one.
Reading a Galileo Thermometer
Each sphere has a temperature indicating medallion. Depending on the
actions of the spheres, the temperature is read in a number of ways. If
there is a sphere or globe floating mid way, the medallion says the
temperature. If you have a group of spheres at the top and a group of
spheres at the bottom, you take the lowest one on the top (say 72) and the
highest one on the bottom (say 76), the temperature is the average of the
two. Or add the two together (148) and divide by 2 equals 74. If all
spheres are floating, the temperature is below the lowest sphere. If all
the spheres are at the bottom, the temperature is above 84. And some are
read by the lowest floating sphere. Normally, it is the lowest medallion
at the top.
These make marvelous, wonderful presents and we can normally ship within 24 hours. However, should something happen in transit - we will gladly replace it, but need 'time' to do so.
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debut February 18, 1998.
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