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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.
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A ruse is a deception, an action or plan which is intended to deceive someone, for example a ruse of war.
California, officially the State of California, is a state in the Pacific Region of the United...
Groningen ( GROHN-ing-ən, also UK: GRON-, US: KHROHN-, Dutch: [ˈɣroːnɪŋə(n)] (listen);...
Yakima ( or ) is a city in and the county seat of Yakima County, Washington, and the state's...
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