What Kind of Energy Transformation Is There in a Television?

flash.pro/CC-BY 2.0

When a television is operating, several different types of energy transformation are going on at the same time. Electrical signals head out from the base station into the set itself, and electricity converts into light, heat and sound energy. The law of conservation of energy says that energy can go from one form to another, but that it is impossible to create or destroy energy. The amount of energy inside the closed system that is the Earth is always the same. Some energy does convert to heat energy in most conversions, meaning that the television's electricity goes, at least in part, drifting off into the environment.