Linked from
The 6 pages that link to Johannes Rydberg, each with the reason it gives.
Rydberg formulaRelated: His empirical formula gave the equation its name.
Hydrogen spectral seriesRelated: His formula unified hydrogen's separate line series mathematically.
Rydberg constantRelated: His work gave the constant its name and organized observed line positions.
Rydberg atomRelated: The atom takes its name from the spectral formula associated with his work.