Mbombela (Nelspruit) | |
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Mbombela (previously known as Nelspruit) is a city in northeastern South Africa. It is the capital of the Mpumalanga province. Located on the Crocodile River, Mbombela lies about 110 km (68 mi) by road west of the Mozambique border, 330 km (210 mi) east of Johannesburg and about 82 km (51 mi) north of the Eswatini border.
Lux | |
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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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