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luminous intensity Dictionary Terms
candlepower
The luminous intensity of a source of light expressed in candelas.
comparison lamp
A reference incandescent light source having a luminous intensity that is used in photometry for comparison of other light...
mean spherical luminous intensity
The average luminous intensity of a point light source measured over all directions.
candela
SI unit of luminous intensity. It is defined as one sixtieth the normal intensity of one square centimeter of a blackbody at...
lumen
A lumen is a unit of measurement used to quantify the amount of luminous flux, which is the perceived power of light. In...
international candle
A unit of measurement of luminous intensity based on a physical standard, a set of calibrated carbon filament lamps. The old...
Hefner unit lamp
A gas lamp used in the early 1900s as a physical standard for measurement of luminous intensity. The Hefner unit was...
luminous intensity
Luminous flux emitted by a source in a given range of directions; the unit of measure is the lumen/steradian, now known as...
Waidner-Burgess standard
A standard of luminous intensity evaluated as the luminous intensity of 1 cm2 of a blackbody at the melting point of...
(9 results found)
May 2024
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