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Galileo Thermometer

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Project by Vincent Nocito posted 358 days ago 1201 views 8 times favorited 4 comments Add to Favorites Watch

This was a fun project that I have had on the books for years. The Galileo Thermometer (or thermoscope) was invented in 1597 by the Italian scientist Galileo Galilei. The glass tube is filled with water. The smaller glass spheres are filled with liquids of different densities. As the temperature of the water changes, the density of the water also changes. As a result, the various glass spheres rise or sink depending on the temperature/density of the liquid within them. The lowest free floating sphere corresponds to the current temperature (equilibrium point). The plan for this project comes from Wood Magazine (October 2003). The parts were cut on a scroll saw and final sanded on my oscillating spindle sander. The wood is cherry. It is finished with Watco cherry oil, two coats of satin Arm-R-Seal and clear Briwax.





4 comments so far

View HillbillyShooter's profile

HillbillyShooter

4491 posts in 918 days


#1 posted 358 days ago

Cool project—where did you get the glass tube and smaller glass spheres? Great conversation piece!

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View Vincent Nocito's profile

Vincent Nocito

422 posts in 1990 days


#2 posted 358 days ago

You can purchase the Galileo thermometer (glass tube already contains the spheres) from Klockit They have thermometers from 11 to 13” and they cost under $20.

View Jim Jakosh's profile

Jim Jakosh

11295 posts in 1731 days


#3 posted 358 days ago

That is a sweet project. Nice job building it!!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View BobWemm's profile

BobWemm

607 posts in 552 days


#4 posted 358 days ago

Awesome.

-- Bob, Western Australia, The Sun came up this morning, what a great start to the day. Now it's up to me to make it even better.

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