The temperature of the mysterious gift, Galileo thermometer

Galileo thermometer, who have heard of this thing? Until two days before meet friends to send gifts, just know originally there is a thermometer, first. Checked the online also has a real images, the original home also has a lot of manufacturers. Well, I don't know if open a shop selling the device in his business? But there is a problem with this is because the number of balls is limited, can determine the temperature range and precision co. , LTD. Such as I identified that the highest temperature is 26 degrees, this two days every day is just a ball the ball float on it. Seem to be more entertainment than practical. 。 。 And checked the origin of Galileo thermometer: Galileo found on demand precise temperature measurement in the process of this interesting approach, 8 - Galileo To determine the weight of 10 balls in a special liquid containing cylindrical tube, with the change of temperature and the small ball can take on when the temperature of the floating up and down. Using this method can detect accurately temperature ( If the ball enough) 。 But what is the principle of the Galileo thermometer? The higher the temperature, the density is smaller, so two sentences on the manual! After the end ask professionals to understand is probably the way it is & ndash; — At higher temperatures, the glass bottle inside the liquid density decreased, buoyancy decreases, and weight is not enough to make certain basic fixed, floating with color liquid column in the above. So can float above the temperature of the lowest ball logo should be roughly the temperature. Temperature in law: in a liquid, one has to determine the weight and volume of a sphere, with the liquid temperature rising and sinking, temperature drop and rise. Cylindrical tube is shown in the upper part of the lowest ball temperature at that time. Small stature, the university asked, not don't know, originally inside so much knowledge!