Amount or strength of light energy per unit or area – intensity decreases the further away from the source.
English
Etymology
From intense + -ity. Cf. also Medieval Latin intensitas.
Pronunciation
- IPA(key): /ɪnˈtɛnsɪti/
Noun
intensity (countable and uncountable, plural intensities)
- The quality of being intense.
- The degree of strength.
- (physics) Time-averaged energy flux (the ratio of average power to the area through which the power "flows"); irradiance.
- (optics) Can mean any of radiant intensity, luminous intensity or irradiance.
- (astronomy) Synonym of radiance