This is because Hg is an abbreviation of the Latin name of the element, which was hydrargium. With this name the Greeks were referring to the fact that mercury is a silvery liquid at room temperature, rather than a solid like other metals.
We've looked at the three types of heat transfer. Conduction and convection rely on temperature differences; radiation does, too, but with radiation the absolute temperature is important.
3 Methods of Heat Transfer. Now in Physics we learn that there are three methods of heat transfer, this being: Radiation, Conduction, and Convection. Letâs start with radiation; radiation is the transfer of energy as electromagnetic waves.