Tall Galileo Thermometer

Watch the glass spheres as they rise or sink when the temperature causes the density of the liquid to change. Created 400 years ago by Galileo, this beautiful glass reproduction contains seven colorful spheres, allowing students to read the temperature from 68^oF to 80^oF. 43 cm (17") high. Five Year Warranty.

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Galilean Thermometer: time lapse- 30 minutes condensed to 15 seconds (wait for it). One of my favorite physics toys, but challenging to make into any kind of interesting video. Here a change of 6 degrees F is shown as three bulbs rise. This thermometer works on Archimedes' principle of buoyancy- as the the water cools down its density increases and objects with less mean density begin to rise. The bulbs are calibrated into 2 degree F increments. Follow the link in my profile to get one like this. #Galileo #thermometer #Galileothermometer #physics #physicstoy #Galileanthermometer #thermodynamics #heat #temperature #archimedes #archimedesprinciple #buoyancy #timelapse #iphone6timelapse #fluids #science #scienceisawesome

A video posted by physicsfun (@physicsfun) on Feb 16, 2016 at 10:23am PST

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Galileo Thermometer

Aug 16, 2015 | By TM of Loganville, GA United States

Kids love looking at the thermometer

Galileo Thermometer

Dec 27, 2014 | By John Q Smith of Willowick, OH United States

The colors in the floating globes are very vivid and easy to see. The glass is high quality and so clear. I enjoy just looking at it more than checking it for the temperature :) .

Great

Sep 30, 2014 | By Jennifer Bernabo of Plano, TX United States

It was exactly what I wanted and shipped beautifully!!

Starts great student discussions!

Oct 11, 2012 | By Karrie of Waukesha, WI United States

These things are awesome! Students love to use their new knowledge to describe why the balls sometimes float or sink. Great experience for them to teach others.

Captures interest!

May 16, 2012 | By Elizabeth S. of Mt. Prospect, IL United States

I have this sitting on my desk at the middle school in which I teach. It often grabs the kids attention and has them inquiring how it works. I always offer extra credit to those who pursue finding out how and it is a great way to encourage them to be inquisitive. Plus it's a quick and fun way for me to check the temperature of my classroom!