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Galileo Galilei Thermometers
Galileo Galilei (1564-1642) was
an important Italian scientist who founded modern physics with its reliance
on experience and experiment. Among countless discoveries of natural
laws, he succeeded in developing a thermometer based on the law of physics
which states that the specific gravity of liquids changes as they expand
at different temperatures. This principle has been used in the Galileo
Thermometer. As the temperature rises, the liquid expands. Its specific
gravity decreases and the spheres sink. The current temperature is indicated
by the lowest floating sphere in the upper part of the cylinder. The
manufacturing of the Galileo Thermometer is extremely complex and done
mostly by hand. Each ball is calibrated to achieve an accuracy of 1/2°F.
They differ in weight by only two thousandths of a gram. The temperature
is indicated on stainless steel medallions. The liquid within is environmentally
safe, biodegradable and ozone friendly.
Galileo's Thermometer |
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