Author: Albert Einstein
Published by: Henry Holt & Co. (ElegantBooks: Digital Reprint)
File size: 1.60 MB
File type: PDF
1) Sidelights on Relativity
2) Relativity--The Special and General Theory
by Albert Einstein
Two influential essays: Ether and Relativity (1920) discusses properties demanded of the ether of space by the theory of relativity; Geometry and Experience (1921) describes the limits within which the Euclidean or any other practical geometric system can be held to be approximately true in connection with the concept of a finite universe.
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