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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.
Kfar Vradim (Hebrew: כְּפַר וְרָדִים) is a town (local council) in northern Israel, with a...
Hengelo (Dutch pronunciation: [ˈɦɛŋəloː] (listen)) is a city in the eastern part of the...
Brăila (, also US: , Romanian: [brəˈila] (listen); Greek: Βράιλα, romanized: Vráila; Turkish:...
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