The Physical Nature of the Space.

Bok av A Ejnshtejn
(From the author) In this book, I'm under the title "On the physical nature of the space," I joined two of my speech, of which the first - "Ether and the theory of relativity," uttered by me May 5, 1920 at Leiden University, and the second - "Geometry and Experience" is processed and updated summary of a speech given by me in the solemn session of the Berlin Academy of Sciences, 27 January 1921. I am glad that the Russian translation of my two speeches made by a competent person such as Mr. Itelson. They account for almost a necessary complement to them translated into Russian as my book, "The Theory of Relativity". Berlin, March 7, 1922