Setif vs Lux

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Sétif (Arabic: سطيف‎, Kabyle: Sṭif) is an Algerian city and the capital of the Sétif Province. It is one of the most important cities of eastern Algeria and the country as a whole, since it is considered the trade capital of the country. It is an inner city, situated in the eastern side of Algeria, at 270 kilometers east of Algiers, at 131 km west of Constantine, in the Hautes Plaines region south of Kabylie.

The city is at 1,100 meters of altitude. The city was part of the ancient Berber kingdom of Numidia, the capital of Mauretania Sitifensis under the rule of the Roman Empire before becoming Muslim during the Muslim conquest of the Maghreb. It is considered as the starting point of the May 8th, 1945 protests, which was a crucial factor to the start of the Algerian War.

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