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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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South Boston is a densely populated neighborhood of Boston, Massachusetts, located south and east of the Fort Point Channel and abutting Dorchester Bay. South Boston, colloquially known as Southie, has undergone several demographic transformations since being annexed to the city of Boston in 1804. The neighborhood, once primarily farmland, is popularly known by its twentieth century identity as a working class Irish Catholic community. Throughout the twenty-first century, the neighborhood has become increasingly popular with millennial professionals.