The first Solvay Conference in the fall of 1911 set a precedent for how leading physicists
collaborate in order to solve difficult problems such as blackbody radiation and the
photoelectric effect. By the end of the fifth Solvay Conference in 1927, the foundation
had been laid for the theory of Quantum Mechanics. Besides featuring many prominent
scientists in the field of quantum physics such as Einstein and Bohr, the first five
Solvay Conferences had one very important characteristic that they all shared: they
were chaired by Hendrik Lorentz.