In this classic work, Eddington explores the concept of reality and the nature of the physical world. He explains complex scientific concepts in an accessible w

Arthur S. Eddington, FRS, (1882–1944) was one of the most prominent British scientists of his time. He made major contributions to astrophysics and to the bro

Physicist and astronomer Arthur Eddington tested Einstein's Theory of Relativity at an eclipse in 1919. A lifelong Quaker, his 1929 Swarthmore Lecture explores