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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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Highlands or uplands are any mountainous region or elevated mountainous plateau. Generally speaking, upland (or uplands) refers to ranges of hills, typically up to 500–600 m.
Coventry ( (listen) KOV-ən-tree or KUV-) is a city, administrative centre and metropolitan...
York is a cathedral city and unitary authority area, at the confluence of the rivers Ouse and...
Salta (Spanish pronunciation: [ˈsalta]) is the capital and most populous city in the Argentine...
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