Which countries use centigrade and which are Fahrenheit?
2. Many countries in the world, including China, use degrees Celsius, but three countries in the world (the United States, Myanmar and Libya) usually use degrees Fahrenheit and seldom use degrees Celsius.
3. The Fahrenheit scale was set by German Warren Hite in 17 14-06.
Fahrenheit is widely used in western Europe, Britain, the United States and other English-speaking countries.
Centigrade scale was formulated by Swedish astronomer Anders centigrade scale in 1742-.
At present, most countries in the world use Celsius, including China.
(1) Fahrenheit (f) is a unit of temperature measurement, named after its inventor, German Gabriel D Fahrenheit (1681-1736). 17 14 years, he found that liquid metal mercury was more suitable for making thermometers than alcohol. He invented the glass mercury thermometer with mercury as the temperature measuring medium. The temperature of the mixture of ammonium chloride and water is chosen as the zero degree of the thermometer, and the human body temperature is 100 degrees. Mercury thermometer is divided into 100 parts according to the volume expansion distance of mercury from 0 degree to 100 degree. [ 1] ? When the atmospheric pressure is1.01x105pa (standard atmospheric pressure), the freezing point of water is 32℉, and the boiling point is 2 12℉.
Fahrenheit scale is one of the empirical scales. In daily life in the United States, this kind of temperature scale is often used, which is represented by the letter ℅.
(2) Celsius is a widely used temperature standard in the world-the unit of temperature measurement in centigrade scale, which is represented by the symbol "℃". It means that under the standard atmospheric pressure of 1, the temperature of pure ice-water mixture is 0 degrees, and the boiling point of water is 100 degrees, and the period is divided into 100 portions on average, each portion is 1 degree, and it is recorded as 1 degree. It was first proposed by the Swedish astronomer anders celsius (170 1 ~ 1744) in 1744, and has been continuously improved since then. Celsius temperature has been incorporated into the International System of Units (SI). T(K)=t(℃)+273. 15, where t is the absolute temperature.