Lux vs Saratov

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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

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Saratov (UK: , US: ; Russian: Сара́тов, IPA: [sɐˈratəf] (listen)) is the largest city and administrative center of Saratov Oblast, Russia, and a major port on the Volga River located upstream (north) of Volgograd. As of the 2010 Census, Saratov had a population of 837,900, making it the 17th largest city in Russia by population. Saratov is 389 km from Volgograd, 442 km from Samara, and 858 km to the south-east of Moscow. The city stands near the site of Uvek, a city of the Golden Horde. The Tsar Feodor I of Russia likely developed Saratov as a fortress to secure Russia's southeastern border.

Saratov developed as a shipping port along the Volga, and it was historically important to the Volga Germans, who settled in large numbers in the city, before they were expelled after World War II. Saratov is home to a number of cultural and educational institutions, including the Saratov Drama Theater, Saratov Conservatory, Radishchev Art Museum, Saratov State Technical University, and Saratov State University.

Source: Wikipedia