Question

name the process in which no mideum is required ​

Answer 1

Answer:

No medium is required for transfer of heat by the process of Radiation. Radiation is a heat transfer method which doesn't rely upon any contact among the heated object and the heat source, unlike the convection and conduction method. Through empty space heat can be transmitted by the thermal radiation.

Answer 2

Radiation is the process in which heat is transmitted one place to other directly without intervening medium. ... Transfer of heat by radiation does not need any material medium. Energy from the sun comes to us by radiation.