David C. Cassidy Quotes

United States, Historian
August 10, 1945

David C. Cassidy is an American historian of science and professor emeritus at Hofstra University, Hempstead, New York. He is best known for his contributions to the history of quantum mechanics, scientific biography, history of physics in Germany and the United States and, most recently, science-history drama.

Relativity was a highly technical new theory that gave new meanings to familiar concepts and even to the nature of the theory itself. The general public looked upon relativity as indicative of the seemingly incomprehensible modern era, educated scientists despaired of ever understanding what Einstein had done, and political ideologues used the new theory to exploit public fears and anxieties-all of which opened a rift between science and the broader culture that continues to expand today.

David C. Cassidy
The quantum entered physics with a jolt. It didn't fit anywhere; it made no sense; it contradicted everything we thought we knew about nature. Yet the data seemed to demand it. ... The story of Werner Heisenberg and his science is the story of the desperate failures and ultimate triumphs of the small band of brilliant physicists who-during an incredibly intense period of struggle with the data, the theories, and each other during the 1920s-brought about a revolutionary new understanding of the atomic world known as quantum mechanics.

David C. Cassidy