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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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La Roche-Bernard (Breton: Ar Roc'h-Bernez) is a commune in the Morbihan department of Brittany in north-western France. Inhabitants of La Roche-Bernard are called in French Rochois for men and Rochoises for women.
Saint Petersburg (Russian: Санкт-Петербург, tr. Sankt-Peterburg, IPA: [ˈsankt pʲɪtʲɪrˈburk]...
Laghouat (English: Laghwat French: Laghouat Arabic: الأغواط) is the capital of the Laghouat...
Southampton ( (listen)) is a city in Hampshire, South East England, 70 miles (110 km) south-west...
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