No Shadow of a Doubt: The 1919 Eclipse That Confirmed Einstein's Theory of Relativity

The extraordinary story of the scientific expeditions that ushered in the era of relativity

In 1919, British scientists led expeditions to Brazil and Africa to test Albert Einstein’s new theory of general relativity in what became the century’s most celebrated scientific experiment. The result ushered in a new era and made Einstein a celebrity by confirming his prediction that the path of light rays would be bent by gravity. Yet the effort to “weigh light” during the May 29, 1919, solar ecli...