🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsTiếng ViệtРусскийالعربيةفارسیไทย한국어中文日本語EntityQ899219· pop 18· linked from 73 articlesspectral luminous efficiencyAlso known as luminosity function, spectral luminous efficiency functionspectral sensitivity of human visual perception of brightnessAvailable in 17 languagesEspañolFrançaisDeutsch中文日本語РусскийItalianoالعربيةCatalanConnectionscolor blindnessEntityInternational Commission on IlluminationEntityCategoriesPhotometryPhysical quantities