Johannes Rydberg

Johannes Rydberg
Johannes Rydberg
Born(1854-11-08)8 November 1854
Died28 December 1919(1919-12-28) (aged 65)
NationalitySwedish
Known forRydberg formula
AwardsFellow of the Royal Society (1919)
Scientific career
FieldsPhysics
InstitutionsLund University
Thesis Konstruktioner af kägelsnitt i 3- och 4-punktskontakt  (1879)

Johannes (Janne) Robert Rydberg (Swedish: [ˈrŷːdbærj]; 8 November 1854 – 28 December 1919) was a Swedish physicist mainly known for devising the Rydberg formula, in 1888, which is used to describe the wavelengths of photons (of visible light and other electromagnetic radiation) emitted by changes in the energy level of an electron in a hydrogen atom.