Abstract from DBPedia | Radiative flux, also known as radiative flux density or radiation flux (or sometimes power flux density), is the amount of power radiated through a given area, in the form of photons or other elementary particles, typically measured in W/m2. It is used in astronomy to determine the magnitude and spectral class of a star and in meteorology to determine the intensity of the convection in the planetary boundary layer. Radiative flux also acts as a generalization of heat flux, which is equal to the radiative flux when restricted to the infrared spectrum. When radiative flux is incident on a surface, it is often called irradiance. Flux emitted from a surface may be called radiant exitance or radiant emittance. The ratio of irradiance reflected to the irradiance received by a surface is called albedo.放射流束(英語: radiative flux、放射フラックス)は光子やほかの素粒子が輸送するエネルギー流束であり、単位は(J·m–2·s–1)(=W/m2)である。天文学において星の等級やスペクトル型の決定や、熱流束の一般化に用いられる。 (Source: http://dbpedia.org/resource/Radiative_flux) |