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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.
Meknes | |
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Population | 520428 |
Meknes (Arabic: مكناس, romanized: maknās; Berber languages: ⴰⵎⴽⵏⴰⵙ, romanized: amknas) is one of the four Imperial cities of Morocco, located in northern central Morocco and the sixth largest city by population in the kingdom. Founded in the 11th century by the Almoravids as a military settlement, Meknes became the capital of Morocco under the reign of Sultan Moulay Ismaïl (1672–1727), son of the founder of the Alaouite dynasty.