Lighting
The SI unit of illuminance and luminous emittance, being the luminous power per area, is measured in Lux. It is used in photometry 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 watts 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 in both singular and plural.

Q: What is the SI unit of illuminace and luminous emittance?
Lux
Belysning SI-enheten för belysnings- och ljusemission, som är ljusstyrkan per område, mäts i Lux. Det används i fotometri som ett mått på intensiteten, som uppfattas av det mänskliga ögat, av ljus som träffar eller passerar genom en yta. Det är analogt med det radiometriska enhetswattet per kvadratmeter, men med effekten vid varje våglängd viktad efter luminositetsfunktionen, en standardiserad modell av människans visuella ljusstyrkauppfattning. På engelska används "lux" i både singular och plural. F: Vad är SI-enheten för belysning och ljusavgivande?
The lighting SI unit for lighting and light emission, which is the brightness per area, is measured in Lux. It is used in photometry as a measure of intensity, perceived by the human eye, of light striking or passing through a surface. It is analogous to the radiometric unit watt per square metre, but with the power at each wavelength weighted after the luminosity function, a standardized model of human visual brightness perception. In English, "lux" is used in both singular and plural. Q: What is the SI unit for lighting and light-emitting?
Lux
Lux