A biography of Gerhard Herzberg, one of the most influential scientists in the twentieth century. In awarding the Nobel Prize, the Swedish Academy said, "It's quite exceptional in the field of science that a single individual, however distinguished, can be a leader of a whole area of research of general importance."

Gerhard Herzberg (1904-1999), winner of the 1971 Nobel Prize in Chemistry, is considered the founder of molecular spectroscopy. Born and educated in Germany, he started his seven decades of research just as the discovery of quantum mechanics began unraveling the mysteries of the microscopic world. He chose to study spectroscopy, the light emitted and absorbed by atoms and molecules, eventually moving to Canada where he established the spectroscopy laboratory for the National Research Council. His Ottawa laboratory became a mecca for generations of young scientists from around the world. There, Herzberg systematized the knowledge of the field in the classic trilogy Molecular Spectra and Molecular Structure, Atomic Spectra, and Atomic Structure. In awarding the Nobel Prize, the Swedish Academy said, "It's quite exceptional in the field of science that a single individual, however distinguished, can be a leader of a whole area of research of general importance."