define conduction convection and radiation also write the unit of its
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CONDUCTION - The spontaneous transfer of heat energy from a region of higer temperature to a region of lower temperature when in contact is called conduction. It is not possible in vacuum.
CONVECTION - In this process, the heat flow happens in vertically upward direction. It is faster process as compared to the process of conduction. It is not possible in vacuum.
RADIATION - In this process, the material medium is not required and is possible in vacuum. It is the fastest process. It involves transfer of heat in all directions. Energy from the sun reaches the Earth by the process of radiation.
◆◆◆◆◆◆◆◆ UNITS ◆◆◆◆◆◆◆◆
Since they are the processes of transfer of heat, their actual unit of measurement is Joule (J).
CONVECTION - In this process, the heat flow happens in vertically upward direction. It is faster process as compared to the process of conduction. It is not possible in vacuum.
RADIATION - In this process, the material medium is not required and is possible in vacuum. It is the fastest process. It involves transfer of heat in all directions. Energy from the sun reaches the Earth by the process of radiation.
◆◆◆◆◆◆◆◆ UNITS ◆◆◆◆◆◆◆◆
Since they are the processes of transfer of heat, their actual unit of measurement is Joule (J).
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