By the 1920s, physicists were driving to synthesize early quantum ideas into a consistent theory. In Lecture 2, Professor Bethe relates the exciting theoretical and experimental breakthroughs that led to modern quantum mechanics.

Professor Bethe offers personal anecdotes about many of the famous names commonly associated with quantum physics, including Bohr, Heisenberg, Born, Pauli, de Broglie, Schrödinger, and Dirac.

The slides accompanying this video were taken verbatim from Professor Bethe's transparencies. In a few instances, editorial clarifications have been added.