Călărași vs Lux

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Călărași (Romanian pronunciation: [kələˈraʃʲ] (listen), Bulgarian: Кълъраш), the capital of Călărași County in the Muntenia region, is situated in south-east Romania, on the bank of Danube's Borcea branch, at about 12 kilometres (7 miles) from the Bulgarian border and 125 kilometres (78 miles) from Bucharest.

The city is an industrial centre for lumber and paper, food processing, glass manufacturing, textiles, medical equipment production and heavy industry, the last represented by the Călărași steel works. The city is known colloquially as "Capșa provinciei" (the Capșa from the provinces).

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