Johannes Rydberg

Johannes Rydberg
Johannes Rydberg
Born	(1854-11-08)8 November 1854 Halmstad
Died	28 December 1919(1919-12-28) (aged 65) Lund
Nationality	Swedish
Known for	Rydberg formula
Awards	Fellow of the Royal Society (1919)
Scientific career
Fields	Physics
Institutions	Lund 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.