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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.
Bytom (Polish pronunciation: [ˈbɨtɔm] (listen); Silesian: Bytōm, Bytōń, German: Beuthen O.S.) is...
Villahermosa ( VEE-(y)ə-air-MOH-sə, Spanish: [ˌbiʝaeɾˈmosa] (listen); "Beautiful...
Caruaru is a Brazilian municipality in the state of Pernambuco. The most populous city in the...
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