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Tashkent (; Russian pronunciation: [tɐʂˈkʲent]; Russian: Ташкент, tr. Tashkent), or Toshkent (Uzbek pronunciation: [tɒʃˈkent]; Uzbek: Toshkent, Тошкент, تاشكینت), is the capital and largest city of Uzbekistan, as well as the most populous city in ex-Soviet Central Asia, with a population in 2018 of 2,485,900. It is in northeastern Uzbekistan, near the border with Kazakhstan.
Before Islamic influence started in the mid 8th century AD, Tashkent was influenced by the Sogdian and Turkic cultures. After Genghis Khan destroyed it in 1219, it was rebuilt and profited from the Silk Road. From the 18th to the 19th century, the city became an independent city-state, before being re-conquered by the Khanate of Kokand.
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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.