Large Galileo ball thermometer, science and technology museum decoration necessary

Galileo thermometer, refers to the Italian scientist Galileo developed on the basis of the principle of material heat bilges cold shrink tool for measuring temperature, after several improvement become our common temperature measuring device today. Based on the principle of density changing with temperature object and design ( The diagram below) Stained glass bulb thermometer, which is also called Galileo thermometer. Now is mainly used for the decoration of the indoor environment, such as science and technology museum, a library, family or for the use of gifts, collection. Galileo thermometer readings although do not have some professional ball thermometer is accurate, but did have fun. Careful observation will find that small glass ball up and down in the tube arrangement is regular, the highest temperature drop ball at the top, the lowest in the bottom, and whether or not the ball, or sink or float, both from the top down according to drop temperature descending order. When all balls are still in the glass tube, not up and down, all the floating ball in the bottom of a small ball drop temperature is measured by the current temperature. The biggest Galileo thermometer, can produce the following figure. Height of 1800 mm, 100 mm diameter, 31, measurable - temperature range 10 ~ 50 ℃, the index value is 2 ℃, the base for decorating plate, internal filling cement, already beautiful can measure indoor temperature, science and technology museum for decoration.