🌐EnglishEnglishРусский日本語EntityQ3644199· pop 5· linked from 4 articlesWittgenstein's rodgeometrical problem involving a sliding rod driven by a crankAvailable in 4 languagesРусскийAfrikaansSlovenianvia Wikidata sitelinks · CC0ConnectionsgeometryEntityLudwig WittgensteinEntityCategoriesCurvesLinkages (mechanical)Ludwig Wittgenstein