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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.
Namur | |
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Population | 110691 |
Namur ( nə-MOOR, nam-OOR, French: [namyʁ]; Dutch: Namen [ˈnaːmə(n)] (listen); Walloon: Nameur) is a city and municipality in Wallonia, Belgium. It is both the capital of the province of Namur and of Wallonia, hosting the Parliament of Wallonia, Walloon Government and administration.
Namur stands at the confluence of the Sambre and Meuse rivers and straddles three different regions – Hesbaye to the north, Condroz to the south-east, and Entre-Sambre-et-Meuse to the south-west.