irradiance

[ ih-rey-dee-uh ns ]
/ ɪˈreɪ di əns /

noun Physics.

incident flux of radiant energy per unit area.
Also irradiation.

Origin of irradiance

First recorded in 1660–70; ir-1 + radiance

Words nearby irradiance

iroquois, iroquois league, irotomy, irq, irra, irradiance, irradiant, irradiate, irradiation, irradicable, irrational

Example sentences from the Web for irradiance

  • Their irradiance was greenish, like the walls; but I was certain that these corpuscles did not come from them.

    The Metal Monster |A. Merritt

  • The irradiance, almost as strong as daylight, but radically different, softened all surrounding objects.

    Ben Blair |Will Lillibridge

British Dictionary definitions for irradiance

irradiance
/ (ɪˈreɪdɪəns) /

noun

the radiant flux incident on unit area of a surface. It is measured in watts per square metre Symbol: E e Also called: irradiation Compare illuminance