Temperature may be defined as the degree of hotness or coldness of a body. A hot body has more internal energy in comparison to cold body. When these two bodies are brought in contact with each other, they exchange energy. Energy is transferred from hot body to cold body till, their temperature become equal. We say that both bodies are in thermal equilibrium.

Different Scale for Measuring Temprature :

The temperature is measured with the help of thermometers. A thermometer can be graduated into following scales.
a. The centigrade or Celsius scale `(text()^0C)`
b. The Fahrenheit scale `(text()^(0)F)`
c. Kelvin scale of temperature or absolute scale Relation between different temperature scales

`(K-273)/5 =C/5=(F-32)/9`