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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.
Wellington (Māori: Te Whanganui-a-Tara [tɛ ˈfaŋanʉi a taɾa]) is the capital city of New Zealand....
Helsingborg (, US also , Swedish: [hɛlsɪŋˈbɔrj] (listen), Danish: [helse̝ŋˈpɒˀ]; spelled...
Marseille ( mar-SAY, also spelled in English as Marseilles; French: [maʁsɛj] (listen), locally...
For the petroleum company, see: Petrolina (company). Petrolina is a city located in the...