====== Elektromágneses sugárzás ====== * https://hu.wikipedia.org/wiki/Elektrom%C3%A1gneses_sug%C3%A1rz%C3%A1s * https://www.znanje.org/abc/tutorials/computer_graphics/01/21percepcija_svjetlosti.htm {{:tudasbazis:emspectrum.gif?nolink|}}