 Title Pages
 Frontispiece
 Epigraph
 Foreword
 Preface

1 Introduction 
2 Einstein’s First Trip to America 
3 Structure and Contents of the Meaning of Relativity 
1 Physics and Geometry 
2 The Principles of General Relativity 
3 The First Solutions and the Challenge of Their Interpretation 
4 Einstein and the Astronomers 
5 The Genesis of Relativistic Cosmology 
6 The Controversy over Gravitational Waves 
7 Philosophical Debates on General Relativity 
8 The Quest for a Unified Field Theory 
9 Early Monographs on Relativity 
10 Beyond the Formative Years  Space and Time in Prerelativity Physics
 The Theory of Special Relativity
 The General Theory of Relativity
 The General Theory of Relativity (Continued)

Appendix For the Second Edition 
Appendix II Generalization of Gravitation Theory 
Appendix II Relativistic Theory of the Nonsymmetric Field 
1 Introductory Remarks 
2 Einstein’s Lectures  Biographical Notes
 Index
For the Second Edition
For the Second Edition
On The "Cosmologic Problem"
 Chapter:
 (p.269) Appendix For the Second Edition
 Source:
 The Formative Years of Relativity
 Author(s):
Hanoch Gutfreund
Jürgen Renn
 Publisher:
 Princeton University Press
This chapter considers the socalled “cosmologic problem” in greater detail. According to Einstein, the problem can be roughly formulated as: on account of our observations on fixed stars we are sufficiently convinced that the system of fixed stars does not in the main resemble an island which floats in infinite empty space, and that there does not exist anything like a center of gravity of the total amount of existing matter. Rather, we feel urged toward the conviction that there exists an average density of matter in space which differs from zero. Hence, the chapter considers whether or not this hypothesis, which is suggested by experience, can be reconciled with the general theory of relativity.
Keywords: cosmologic problem, fixed stars, gravity, general theory of relativity, space, matter
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 Title Pages
 Frontispiece
 Epigraph
 Foreword
 Preface

1 Introduction 
2 Einstein’s First Trip to America 
3 Structure and Contents of the Meaning of Relativity 
1 Physics and Geometry 
2 The Principles of General Relativity 
3 The First Solutions and the Challenge of Their Interpretation 
4 Einstein and the Astronomers 
5 The Genesis of Relativistic Cosmology 
6 The Controversy over Gravitational Waves 
7 Philosophical Debates on General Relativity 
8 The Quest for a Unified Field Theory 
9 Early Monographs on Relativity 
10 Beyond the Formative Years  Space and Time in Prerelativity Physics
 The Theory of Special Relativity
 The General Theory of Relativity
 The General Theory of Relativity (Continued)

Appendix For the Second Edition 
Appendix II Generalization of Gravitation Theory 
Appendix II Relativistic Theory of the Nonsymmetric Field 
1 Introductory Remarks 
2 Einstein’s Lectures  Biographical Notes
 Index