Temperature and Temperature Scales

Celsius, or centigrade, is a scale and unit of measurement for temperature. It is one of the most commonly used temperature units.

In the Fahrenheit scale, the freezing of water is defined at 32 degrees, while the boiling point of water is defined to be 212 degrees.

Absolute zero is the coldest possible temperature; formally, it is the temperature at which entropy reaches its minimum value.

The kelvin is a unit of measurement for temperature; the null point of the Kelvin scale is absolute zero, the lowest possible temperature.