Transmission of heat from the higher temperature to the point one at a lower temperature. There is a central object to that, but the heat capacity of the spreading gradually.
Transmission of heat from a higher temperature to the point where the temperature is lower. There is an object by object can live with that. But gradually heat capacity Spread the meat that object.
Heat transmission from the point of higher temperature to the point temperature lower. Object as the center by the object to be, but the heat capacity gradually spread through the texture on it.