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Wœrth or Woerth (German: Wörth an der Sauer) is a commune in the Bas-Rhin department and Grand Est region of north-eastern France.
The town, which lies some 40 km (25 mi) north of Strasbourg, is known for being the site of the Battle of Wörth, which took place on 6 August 1870 in the opening stages of the Franco-Prussian War.
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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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