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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.
Beroun (Czech pronunciation: [ˈbɛroun]; German: Beraun) is a town in the Central Bohemian Region...
This is a list of auxiliaries of the United States Navy. It covers the various types of ships...
Bogotá (, also UK:, US:, Spanish: [boɣoˈta] (listen)), officially Bogotá, Distrito Capital,...
Hampton () is an independent city in the Commonwealth of Virginia in the United States. As of the...