🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ658065· pop 39· linked from 84 articlesRydberg constantphysical constantArticleJohannes Rydberg (1854-1919), Swedish physicist and professor at Lund University. In spectroscopy, the Rydberg constant, symbolRRead full article (480 paragraphs)Available in 39 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةArmenianConnectionsspectroscopyEntityPlanck constantEntityCategoriesEmission spectroscopyPhysical constantsUnits of energy