Niels Bohr (1885-1962)
Niels Bohr is invited to the 1921 Conference, the first Solvay Conference after the First World War.
In 1921, Niels Bohr accepts to act as a speaker at the Conference and to present his theory of spectra and of the configuration of electrons in the atom. But unfortunately he falls ill and suggests Paul Ehrenfest as his replacement, who had succeeded Hendrik Lorentz at Leiden University. Invited to the Conferences of 1927 and 1930, Niels Bohr will be one of the defenders of quantum mechanics, as developed by Werner Heisenberg, Max Born and Pascual Jordan. His debates with Albert Einstein will go down in history.
It is only in 1929 that Niels Bohr joins the Solvay Committee for Physics, succeeding Sir William Henry Bragg.

