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Illumination vs Irradiance - What's the difference?

illumination | irradiance |

As nouns the difference between illumination and irradiance

is that illumination is the act of illuminating, or supplying with light; the state of being illuminated while irradiance is the act of irradiating; emission of rays of light.

illumination

English

Noun

(en noun)
  • The act of illuminating, or supplying with light; the state of being illuminated.
  • Festive decoration of houses or buildings with lights.
  • Adornment of books and manuscripts with colored illustrations. See illuminate (transitive verb).

    • irradiance

    English

    Noun

    (wikipedia irradiance) (en noun)
  • The act of irradiating; emission of rays of light.
  • That which irradiates or is irradiated; lustre; splendour; brilliancy.
  • (physics) The radiant power received by unit area of surface