Kindly define heat transference through radiation!!

Dear Student,

Heat transfer can be defined as the process of transfer of heat energy from one point to another.

There are three modes of heat transfer:
1. Conduction
2. Convection
3. Radiation

Following are the definitions of each:
1. Conduction : The transfer of heat from atom to another atom in a solid body is called conduction. If the temperature at one end of a metal rod is raised by heating, heat is conducted to the colder end. Conduction occurs not only within a body but also between two bodies if they are brought into contact.
2. Convection : Heat energy transfers between a solid and a fluid when there is a temperature difference between the fluid and the solid. This is known as "convection heat transfer". Generally, convection heat transfer can not be ignored when there is a significant fluid motion around the solid.
3. Radiation : This process is fundamentally different from both conduction and convection in that the substances exchanging heat need not be in contact with each other. The heat energy transferred in the form of rays from one body to another body is called radiation.

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