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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.
Tisens - Tesimo | |
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Population | 1809 |
Tisens (German pronunciation: [ˈtiˑsn̩s]; Italian: Tesimo [ˈteːzimo]) is a comune (municipality) in South Tyrol in northern Italy, located about 15 kilometres (9 mi) northwest of the city of Bolzano.
The commune is home to Katzenzungen Castle which harbors a 350+ year old vine of the Italian wine grape variety Versoaln that is considered one of the world's oldest and largest single grapevines in existence.