On May 7, 1981, influential physicist Richard Feynman gave a keynote speech at Caltech. Feynman opened his talk by politely rejecting the very notion of a keynote speech, instead saying that he had ...

In the 1920s, when quantum mechanics was young, physicists Jane Dewey and Laura Chalk performed some of the first experimental tests of the theory, based on a phenomenon called the Stark effect. Later ...

The acceptance of molecules as 3D structures led to major advances in chemistry, with quantum mechanics providing the theoretical framework. Early successes, like modeling the neutral H2 molecule, ...