Solar energy

Posted: 6 November 2000

Radiant energy produced in the Sun as a result of nuclear fusion reactions. It is transmitted to the Earth through space by electromagnetic radiation in quanta of energy called photons, which interact with the Earth's atmosphere and surface. Since the sun is a very hot body, radiating at a temperature of about 57000 K, the bulk of the radiation is high energy at ultraviolet and visible light wavelengths.