irradiance

Noun

 * 1) The act of irradiating; emission of rays of light.
 * 2) That which irradiates or is irradiated; lustre; splendour; brilliancy.
 * 3)  The radiant power received by unit area of surface.
 * 4) * 1959, United States. National Aeronautics and Space Administration, NASA Technical Note (issues 3641-3650, page 15)
 * The geometry of the cone θ and the irradiance at the image of the carbon block were used to determine the absolute steradiancy of the energy in the cone θ as a radiometer calibration value.

Translations

 * Finnish: säteilytysvoimakkuus
 * German: Bestrahlungsstärke
 * Spanish: irradiancia