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Galileo Thermometer
Item #71575
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Rising to the Occasion. Despite its scientific shape, it is easy to read this mouthblown glass iteration of the Galileo Thermometer. The varying density of the glass spheres within the cylinder of this Galileo Thermometer allows them to rise or fall as temperatures change. Simply identify the lowest floating sphere and its tag will indicate the temperature with an accuracy within 2°, between 68° to 80° Fahrenheit.
Named for the physicist Galileo—who discovered the principle that liquid density changes in relation to its temperature—the Galileo Thermometer was actually invented by a group of Florentine academics and technicians in 1666. In addition to some of Galileo’s own personal correspondence cataloged in our Smithsonian Institution Libraries, our National Air and Space Museum curates an extensive collection of weather-data gathering devices, including a 16mm weather observation camera, a Pibal weather bureau and numerous meteorological satellites.
15"h. x 3.125"dia.

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Customer Reviews

Average Rating:
By Mamalou
San Dimas
January 20, 2017
"Have received the Galileo thermometer as a gift and given it. It is always welcome. Just beautiful and unique."
By dba Kansas World's Fair
Belleville, KS
January 12, 2016
"This was a Christmas present, and was a hit! The historic functionality makes it interesting, and the subtle jewel toned floats make it an eye-catching, pleasing addition to any decor. PS - super fast shipping, during the holiday season no less!"
By Pamela the Artist
Raleigh, NC
December 29, 2016
"I'm very pleased with this item. It looks great and is a conversation starter. The only drawback is that in a home, the temperature is fairly constant, so there won't be much variety in the postion of the colors."
By Cjw
December 27, 2016
"Great - bigger than I expected"
By Jude
March 03, 2014
"This is the second one we are buying because we broke the first one a few years ago. My husband bought one for me and we broke it. I don't remember exactly how it was broken but it was on the mantle and slipped out of somebody's hand. So you do have to be careful with it and it was a mess to clean up. Only the clear fluid broke, the individual colored pieces didn't break. I kept the temperature pieces for years but couldn't think of anything to do with them. My husband mentioned that he missed it the other day so he's getting a new one for his birthday. It is pretty and a conversation piece besides giving the room temperature accurately."