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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.
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Limerick (; Irish: Luimneach [ˈl̪ˠɪmʲ(ə)nʲəx]) is a city in County Limerick, Ireland. It is located in the Mid-West Region and is also part of the province of Munster. With a population of 94,192 at the 2016 census, Limerick is the third-most populous urban area in the state, and the fourth-most populous city on the island of Ireland at the 2011 census.
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