The transfer of heat from one object to another when the hotter object heats the surrounding air and the air in turn heats the other object.
1. The circulatory motion that occurs in a fluid at a non-uniform temperature owing to the variation of its density and the action of gravity. 2. The transfer of heat by this automatic circulation of fluid.
A method of transferring heat by the actual movement of heated molecules, usually by a freestanding unit such as a furnace.