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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.
Franca is a municipality in the Brazilian state of São Paulo. The population is 350,400 (2018...
Lamego (Portuguese pronunciation: [lɐˈmeɣu] (listen); Proto-Celtic: *Lamecum) is a city and...
Sibut (French pronunciation: [siby(t)]), formerly Fort Sibut (French: Fort-Sibut) is the capital...