Relativity theory of protons and electrons / by Sir Arthur Eddington. Eddington, Arthur Stanley, Sir, 1882-1944. 10620 Relativity (Physics) 1427 Quantum theory. 268 Protons. 10621 Electrons. 2929 530.1 EDR "Printed in Great Britain." New York, The Macmillan Company; Cambridge, Eng. : The University Press, c1936. c1936. 1936 Text vi p., 1 l., 336 p. : eng