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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.
Évora | |
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Population | 56596 |
Évora (US: EV-uurr-ə, Portuguese: [ˈɛvuɾɐ] (listen); Proto-Celtic: *Ebora) is a city and a municipality in Portugal. The population in 2011 was 56,596, in an area of 1307.08 km². It is the seat of the Évora District. The present Mayor is Carlos Pinto de Sá of the CDU coalition. The municipal holiday is 29 June.
Due to its well-preserved old town centre, still partially enclosed by medieval walls, and many monuments dating from various historical periods, including a Roman Temple, Évora is a UNESCO World Heritage site. It is also a member of the Most Ancient European Towns Network.
Banja Luka (Serbian Cyrillic: Бања Лука, pronounced [bǎɲa lǔːka] (listen)) or Banjaluka (Бањалука...
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Leeuwarden (US: , Dutch: [ˈleːʋɑrdə(n)] (listen); West Frisian: Ljouwert [ˈljɔːʋ(ə)t]/[ˈʎɔːw(ə)t]...
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