EntityQ106757· pop 8· linked from 9 articlesArthur KönigSign in to saveGerman physicist (1856–1901)ConnectionsdichromacyEntityGermanyCountryGermanEntityBerlinEntityBonnEntityJames Clerk MaxwellEntityHeidelbergEntityopticsEntityKrefeldEntityastronomerEntitycolor blindnessEntityHermann von HelmholtzEntityHumboldt-Universität zu BerlinEntityabnormal kyphosisDiseaseHermann EbbinghausEntitycone cellEntityrod cellEntityoptical aberrationEntityrhodopsinProteinInternational Commission on IlluminationEntityCategories1856 births1901 deaths19th-century German physicistsPeople from KrefeldScientists from the Rhine Province