Lux | |
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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.
Ohey | |
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Ohey (Walloon: Ohè) is a Walloon municipality and village in the Belgian province of Namur.
On 1 January 2006 the municipality had 4,283 inhabitants.
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