The Municipal District of Newcastle West | |
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Newcastle is a community within the Town of Drumheller, Alberta, Canada. It held village status for eight years between 1923 and 1931, and was recognized as a hamlet prior to annexation by Drumheller in 1967. The community is located within the Red Deer River valley on South Dinosaur Trail (Highway 838), approximately 2 km (1.
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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.