Energy that comes from electromagnetic waves is called radiant energy.
People have devised many uses for radiant energy, which exists in great abundance. The energy from the sun is used to power a wide variety of devices. Radiant heating is another common use of radiant energy. The heat energy is released from walls, ceilings, or other surfaces and is used to heat the objects in the area of the waves directly rather than simply heating the surrounding air, as a fire would do. Such energy can also be used medically in the treatment of some muscular problems.