Johannes Rydberg

Johannes (Janne) Robert Rydberg was a Swedish physicist mainly known for devising the Rydberg formula, in 1888, which is used to describe the wavelengths of photons emitted by changes in the energy level of an electron in a hydrogen atom.

8 November 1854

Born on the same birth day (8 November): Douglas Townsend • Henry Rodríguez (outfielder) • June Havoc • L. K. Advani • Laura Cox • Otto Wilhelm Masing • Teofilo Folengo • Yann Kermorgant

Born in the same month (November 1854): Alphonse Desjardins (co-operator) • Carlo Fornasini • George Whitefield Chadwick • Hubert Lyautey • John Philip Sousa • Maud Howe Elliott • Paul Sabatier (chemist) • Pope Benedict XV