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When heat is transferred from hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

  • In radiation, heat transfer occurs through electromagnetic waves without involving particles.
  • The heat transfer mechanism in which no medium is required is called radiation. It refers to the movement of heat in waves, as it does not need molecules to travel through.
  • The object need not be in direct contact with one another to transmit heat.
  • It is the process of heat transfer from a hot body to a cold body in a straight line without affecting the intervening medium