EntityQ658065· pop 39· linked from 84 articlesRydberg constantSign in to savephysical constantArticleJohannes Rydberg (1854-1919), Swedish physicist and professor at Lund University. In spectroscopy, the Rydberg constant, symbolRRead full article (480 paragraphs)ConnectionsspectroscopyEntityPlanck constantEntityCategoriesEmission spectroscopyPhysical constantsUnits of energy