Artigas vs Lux

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José Gervasio Artigas Arnal (Spanish pronunciation: [xoˈse ɣeɾˈβa.sjo aɾˈti.ɣas aɾˈnal]; June 19, 1764 – September 23, 1850) is a national hero of Uruguay, sometimes called "the father of Uruguayan nationhood".

Source: Wikipedia

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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.

In English, "lux" is used as both the singular and plural form.The word is derived from the Latin word for "light", lux.

Source: Wikipedia