The foundations of Einstein's theory of gravitation

by Erwin Freundlich

THE FOUNDATIONS OF
EINSTEIN'S THEORY OF
GRAVITATION

BY

ERWIN FREUNDLICH

DIRECTOR OF THE EINSTEIN TOWER

WITH A PREFACE BY

ALBERT EINSTEIN

TRANSLATED FROM THE FOURTH GERMAN EDITION,
WITH TWO ESSAYS, BY

HENRY L. BROSE

CHRIST CHURCH, OXFORD

WITH AN INTRODUCTION BY