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Definition of "intensity" |
The brightness of light in a given direction. Luminous intensity may be expressed in Candelas (cd) or in Lumens. / a measure of the strength of a light field. Two different definitions of intensity are commonly encountered. Especially in the discipline of radiometry, intensity is usually defined to be power per unit solid angle. Alternatively, especially in laser physics, define intensity to be power per unit area. The intended definition can usually be deduced from context or from dimensional analysis. |
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