A room is heated by means of a charcoal fire, an occupants of the room standing away from the fire is warmed mainly by
Radiation refers to the transmission of energy as electromagnetic radiation from its emission at a heated surface to its absorption on another surface, a process requiring no medium to convey the energy.
Conduction is the transferring of heat by direct contact.
Convection is transferring heat through the motions of fluids (gases and liquids).
There is an explanation video available below.
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