Home > Lighting >   Galileo Colour Changing Thermometer Lamp This amazing Galileo termometer is a working thermometer as well as an attractive piece of glassware. Searching for a way to measure exact temperatures, Galileo discovered this fascinating method. He placed several exactly weighty balls in a cylinder filled with a certain liquid, and found that the balls rose or fell according to the current temperature. By this method he was able to determine the correct temperature. The thermometer works on the principle discovered by Galileo that the density of a liquid changes as temperature varies. Each of the glass balls is exactly weighted by partially filling the spheres with liquid.  When the temperature rises, the liquid in the glass cylinder becomes less dense and the heavier balls sink slowly to the bottom. The Galileo Thermometer also doubles up as a stunning colour changing nightlight making it a fascinating addition to any room! When the light is switched on it illuminates the glass thermometer beautifully and slowly changes from colour to colour creating a mellow ambience Fantastic piece of Science Equipment 7 Different colur changing Light Phases 5 Floating temperature balls - 18 to 26 degrees Ideal for any home, office or desktop On/off Switch for Light Requires 3 x AA Batteries (Not Included) Measures 33cm (with base) Our Price: £12.99 Customer Reviews Write an online review and share your thoughts with other shoppers! « Back