Which of the following is NOT a recognized method of heat transfer?

In the context of heat transfer, conduction, convection, and radiation are the three primary recognized methods through which thermal energy can be transferred from one location to another.

Conduction is the process where heat is transferred through a material without the movement of the material itself, relying on the collisions of particles within the material. It occurs mainly in solids, where molecules are closely packed together and able to transfer energy efficiently.

Convection involves the movement of heat through fluids (liquids and gases) by the physical movement of the fluid itself. As the fluid is heated, it tends to rise, and cooler fluid moves in to take its place, creating a continuous circulation pattern that facilitates heat transfer.

Radiation represents heat transfer through electromagnetic waves, which can occur in a vacuum. This is how heat from the sun reaches the Earth, as it does not require a medium to transfer energy.

Diffusion, on the other hand, refers to the movement of particles from an area of higher concentration to an area of lower concentration. While it can involve energy transfer, it is not a recognized method of heat transfer in the same way as conduction, convection, and radiation are, as it primarily describes the movement of substances rather than the movement of thermal energy specifically. Therefore