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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.
Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2017, its...
Dundalk ( dun-DAWK; Irish: Dún Dealgan [ˌd̪ˠuːnˠ ˈdʲalˠɡənˠ], meaning "Dealgan's fort",...
Lihue or Līhuʻe is an unincorporated community, census-designated place (CDP) and the county seat...