Space, time and gravitation; an outline of the general relativity theory by Eddington, Arthur Stanley, Sir, 1882-1944

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Space, time and gravitation; an outline of the general relativity theory
by Eddington, Arthur Stanley, Sir, 1882-1944 Publication date 1921

https://archive.org/details/spacetimegravita00eddi/page/n12/mode/2up

https://en.wikipedia.org/wiki/Arthur_Eddington

Eddington wrote a number of articles that announced and explained Einstein's theory of general relativity to the English-speaking world. World War I had severed many lines of scientific communication, and new developments in German science were not well known in England. He also conducted an expedition to observe the solar eclipse of 29 May 1919 that provided one of the earliest confirmations of general relativity, and he became known for his popular expositions and interpretations of the theory.

Craig