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The lux (symbol: lx) is the SI derived unit of illuminance, measuring luminous flux per unit area. It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. It is analogous to the radiometric unit watt per square metre, but with the power at each wavelength weighted according to the luminosity function, a standardized model of human visual brightness perception.
Trondheim (UK: , US: , Urban East Norwegian: [ˈtrɔ̂n(h)æɪm]; Southern Sami: Tråante; Kven:...
Granada ( grə-NAH-də, Spanish: [ɡɾaˈnaða], locally [ɡɾaˈna]) is the capital city of the province...
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