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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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Kalmar (, also US: , Swedish: [ˈkǎlmar] (listen)) is a city in the southeast of Sweden, situated by the Baltic Sea. It had 36,392 inhabitants in 2010 and is the seat of Kalmar Municipality. It is also the capital of Kalmar County, which comprises 12 municipalities with a total of 236,399 inhabitants (2015).
From the thirteenth to the seventeenth centuries, Kalmar was one of Sweden's most important cities. Between 1602 and 1913 it was the episcopal see of Kalmar Diocese, with a bishop, and the Kalmar Cathedral from 1702 is an example of classicistic architecture.
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