🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiSvenskaРусский한국어中文日本語EntityQ1257777· pop 16· linked from 31 articlesYoung–Helmholtz theoryAlso known as trichromatic theorypostulated existence of three photoreceptor types in the eyeWikidata factsImageYoungHelm.jpgSources (1)wikidata.orgvia Wikidata · CC0Available in 16 languagesEspañolFrançaisDeutsch日本語РусскийItalianoBulgarianCatalanEstonianConnectionsInternational Standard Serial NumberEntitybrainEntityCategoriesHermann von HelmholtzVision