The temperature was zero yesterday, but today it is twice as cold as yesterday. What's the temperature today?

Zero degree, Fahrenheit 32°F, because it is twice as cold as yesterday, so today is16 F, which is -8.9 degrees Celsius.

The conversion formula between Celsius (C) and Fahrenheit (F) is: C = 5×(F- 32)/9, and F = 9×C /5+32.

1℃ =(9× 1 /5+32)℉=33.8℉

Extended data

17 14 Warren hite found that liquid metal mercury was more suitable for making thermometers than alcohol. A glass mercury thermometer was invented with mercury as the temperature measuring medium. The freezing point of the mixture of ammonium chloride and ice water is chosen as the zero degree of the thermometer, and the human body temperature is 100 degree of the thermometer. At standard atmospheric pressure, the melting point of ice is 32℉, the boiling point of water is 2 12℉, and there are 180 equal parts in the middle, and each equal part is 1 Fahrenheit, which is recorded as "1℉".

Centigrade scale: 1740, the Swedes proposed that the temperature of ice-water mixture should be 0 degrees Celsius, and the boiling point of water at standard atmospheric pressure should be 100 degrees Celsius. The temperature is divided according to the two fixed temperature points of water. Intercropping between two points is divided into 100 equal parts, and each interval is called 1 degree Celsius, which is recorded as 1 degree Celsius.

At present, the internationally used temperature scales are Fahrenheit scale (F), centigrade scale scale (C), thermodynamic scale (K) and international practical scale. From the point of view of molecular motion theory, temperature is a sign of the average translational kinetic energy of an object molecule. Temperature is the collective expression of a large number of molecular thermal movements, which has statistical significance. For a single molecule, temperature is meaningless.

Baidu encyclopedia-Fahrenheit temperature