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illuminance

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The answer ILLUMINANCE has 3 possible clue(s) in existing crosswords.

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The word ILLUMINANCE is VALID in some board games. Check ILLUMINANCE in word games in Scrabble, Words With Friends, see scores, anagrams etc.

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Definitions of illuminance in various dictionaries:

noun - the luminous flux incident on a unit area

ILLUMINANCE - In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminate...

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Possible Crossword Clues
It's measured in luxes
brightness level

Last Seen in these Crosswords & Puzzles
Mar 30 2017 7 Little Words Daily Puzzle
Mar 30 2017 7 Little Words Daily Puzzle
Aug 20 2014 USA Today

Possible Dictionary Clues
See illumination.
the amount of luminous flux per unit area.
the luminous flux incident on a unit area
The amount of luminous flux per unit area.

Illuminance description
In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. Luminous emittance is also known as luminous exitance.In SI derived units these are measured in lux (lx), or equivalently in lumens per square metre (cd·sr·m−2). In the CGS system, the unit of illuminance is the phot, which is equal to 10000 lux. The foot-candle is a non-metric unit of illuminance that is used in photography.Illuminance was formerly often called brightness, but this leads to confusion with other uses of the word, such as to mean luminance. "Brightness" should never be used for quantitative description, but only for nonquantitative references to physiological sensations and perceptions of light. * The human eye is capable of seeing somewhat more than a 2 trillion-fold range: The presence of white objects is somewhat discernible under starlight, at 5×10−5 lux, while at the bright end, it is possible to read large text at 108 lux, or about 1000 times that of direct sunlight, although this can be very uncomfortable and cause long-lasting afterimages.

Illuminance description

In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. Luminous emittance is also known as luminous exitance.In SI derived units these are measured in lux (lx), or equivalently in lumens per square metre (cd·sr·m−2). In the CGS system, the unit of illuminance is the phot, which is equal to 10000 lux. The foot-candle is a non-metric unit of illuminance that is used in photography.Illuminance was formerly often called brightness, but this leads to confusion with other uses of the word, such as to mean luminance. "Brightness" should never be used for quantitative description, but only for nonquantitative references to physiological sensations and perceptions of light.
* The human eye is capable of seeing somewhat more than a 2 trillion-fold range: The presence of white objects is somewhat discernible under starlight, at 5×10−5 lux, while at the bright end, it is possible to read large text at 108 lux, or about 1000 times that of direct sunlight, although this can be very uncomfortable and cause long-lasting afterimages.

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