Describe the process of heat transfer by radiation?

 

 Question: Describe the process of heat transfer by radiation?

Heat transfer by radiation is the process of transferring thermal energy from one object to another through electromagnetic waves. Unlike conduction and convection, radiation does not require any physical contact or medium between the objects. Radiation can occur in any direction and can travel across empty space. The amount of heat transferred by radiation depends on the temperature, surface area, and emissivity of the objects involved. Emissivity is a measure of how well an object emits or absorbs radiation. A perfect emitter or absorber of radiation has an emissivity of 1, while a poor emitter or absorber has an emissivity close to 0. The sun, for example, is a good emitter of radiation and has a high emissivity, while a shiny metal surface is a poor emitter and has a low emissivity.

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