Each glass ball has a metal tag attached that serves to both indicate temperature and as a counterweight.

nbsp; Of the spheres that appear at the top half we take the lowest hanging one to be the relevant temperature. A Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The instrument now known as a Galileo thermometer was invented by a group of academics and technicians known as the Accademia del Cimento of Florence, [2] who included Galileo's pupil, Torricelli and Torricelli's pupil Viviani.To enable personalised advertising (like interest-based ads), we may share your data with our marketing and advertising partners using cookies and other technologies.

Although named after the 16th–17th-century physicist Galileo, the thermometer was not invented by him. Features an 11-inch Galileo thermometer, a glass Goethe barometer with frosted world map decoration and a wooden base. Both pieces are beautifully shaped with a wooden base that makes the set easy to display on desk or bookshelf. What you have to do is simply look at the lowest ball that is floating while ignoring those tags that had sunk to the bottom of the container. A Goethe weather ball barometer is a device that predicts barometric weather changes by observing the rise and fall of liquid within the spout of a vented glass vessel.This is a good way to demonstrate using the thermometer, especially if you’re doing it in a classroom. Appreciated for its robustness, Fortin's barometer was used, together with the thermometer, in late eighteenth-century laboratories for accurately measuring the "atmospheric" conditions of experimental processes. For example, many have a range of 60 °F (16 °C) to 100 °F (38 °C) and won't tell you the temperature if it's higher or lower than those values. If you have never used one like this as you rotate the thermometer between your fingers look between the black arrows toward the base and the silver line becomes visible.