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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.
Limerick (; Irish: Luimneach [ˈl̪ˠɪmʲ(ə)nʲəx]) is a city in County Limerick, Ireland. It is...
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Louisville ( (listen) LOO-ee-vil, US: (listen) LOO-ə-vəl, locally (listen) LUU-vəl) is the...
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