A beautiful thermometer - Galileo thermometer

Galileo thermometer appearance, can measure about the scope of the indoor temperature, the thermometer is interior decoration. Commonly used at home, hotels, cafes, etc as a decorative supplies, can be used as a gift, is also a good gift. Galileo thermometer is glass products, fragile, must pay attention to the place of safety. Galileo thermometer working principle is: Galileo thermometer consists of a glass tube filled with water and a few floating bubbles. Each glass bulb connected with a small metal tag indicating temperature. Symbols engraved with a number on the label and temperature. The balance of the fact that the metal label are calibrated. The weight of each label are slightly different with the other. As a result of these glass bubble is blow made by hand, they have different size and shape. The glass bulb is through to join a certain amount of liquid which has the same density method for calibration. Therefore, after weight of label on the connection, the density of each glass bulb ( The quality of volume And other glass bubble is slightly different, and the density of all glass bubble is very close to the density of water around them. The basic principle of it is as the change of outside air temperature thermometer, temperature of water around the glass bulb will change too. But as the change of water temperature, water can expand or contract, its density change. So, in any given under the density of some glass bulb to come, while others will sink. Sinking glass bulb instructions as the current most about temperature.