(see electromagnetic radiation) radiation - The emission or transmission of energy in the form of waves through space or another medium radiative zone or layer - About 70% of the sun; the section where energy travels outward by radiation
also called electromagnetic energy, made up of two fields (electrical and magnetic), existing in a range of wavelengths that extends from radio waves that many be thousands of meters long to gamma rays with wavelengths as short as a million-millionth (10^-12) of a meter
Energy in the form of electromagnetic waves In some cases it refers to the radiation emitted from the sun
Energy traveling in the form of electromagnetic waves Measured in units of energy such as joules, ergs, or kilowatt-hours