Quantum mechanics was born 100 years ago. Physicists are celebrating

The International Year of Quantum marks a century of scientific developments

A black and white photo of nearly 30 physicists, most seated, some standing, posing for the camera.

In 1927, physicists gathered to discuss the recent formulation of quantum mechanics, at the Solvay Conference on Physics in Brussels. Many important figures were in attendance, including Werner Heisenberg (back row, third from right) and Erwin Schrödinger (back row, sixth from right.) Albert Einstein is front row center.