Brus vs Lux

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Brus (Serbian Cyrillic: Брус, pronounced [brûːs]) is a town and municipality located in the Rasina District of central Serbia. According to the 2011 census, the population of the town is 4,572, while the population of the municipality is 16,293. It is located at 430 metres (1,410 ft) above sea level, just below the Kopaonik ski resort.

The city is surrounded by hills on three levels, where the lowest one is a place where the Grasevka river firths into the Rasina river. On the upper level of the town a fountain of medicinal mineral water is located.

Source: Wikipedia

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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.

In English, "lux" is used as both the singular and plural form.The word is derived from the Latin word for "light", lux.

Source: Wikipedia