CONTENTS

PAGE
FOREWORD[ix]
PART I
PRE-RELATIVITY PHYSICS
CHAPTER
I. MANIFOLDS[23]
II. THE BIRTH OF METRICAL GEOMETRY[32]
III. RIEMANN’S DISCOVERIES AND CONGRUENCE[39]
IV. THE PROBLEM OF PHYSICAL SPACE[47]
V. AN ALTERNATIVE VIEW OF NON-EUCLIDEAN
GEOMETRIES
[60]
VI. TIME[71]
VII. SYSTEMS OF CO-ORDINATES AND DISTANCE[83]
VIII. THE MEANING OF THE WORD RELATIVITY[99]
IX. THE PRINCIPLES OF RELATIVITY[103]
X. CLASSICAL MECHANICS AND THE NEWTONIAN
PRINCIPLE OF RELATIVITY
[106]
XI. THE ETHER[116]
XII. THE EQUATIONS OF ELECTROMAGNETICS AND
LORENTZ’S THEORY
[125]
PART II
THE SPECIAL THEORY OF RELATIVITY
XIII. EINSTEIN’S SPECIAL THEORY OF RELATIVITY[143]
XIV. RELATIVISTIC MECHANICS[156]
XV. CONSEQUENCES OF THE NEW SPACE AND TIME
MEASUREMENTS—SIMULTANEITY
[161]
XVI. PRACTICAL CONGRUENCE IN RELATIVITY[187]
XVII. THE MATHEMATICAL EXPRESSION OF EINSTEIN’S
FUNDAMENTAL PREMISES
[193]
XVIII. THE DISCOVERY OF SPACE-TIME[195]
XIX. VARIOUS POSSIBLE WORLDS[201]
XX. THE IRREVERSIBILITY OF TIME[212]
XXI. THE REALITY OF THE CONTRACTION
OF LENGTHS AND OF THE LENGTHENING
OF DURATIONS
[219]
XXII. THE PARADOXES ASSOCIATED WITH
SPACE-TIME AND THE TRIP TO THE STAR
[225]
PART III
THE GENERAL THEORY OF RELATIVITY
XXIII. POTENTIALS AND FORCES[245]
XXIV. THE POSTULATE OF EQUIVALENCE[250]
XXV. THE INCLUSION OF GRAVITATION IN
THE MODEL OF SPACE-TIME
[261]
XXVI. TENSORS AND THE LAWS OF NATURE[266]
XXVII. THE PRINCIPLE OF GENERAL
COVARIANCE, OR THE GENERAL PRINCIPLE OF
RELATIVITY
[276]
XXVIII. THE DISCOVERY OF THE EINSTEINIAN
LAW OF GRAVITATION
[281]
XXIX. THE GENERAL LAWS OF MOTION[286]
XXX. THE VERIFICATION OF EINSTEIN’S LAW[290]
XXXI. THE SEPARATION OF SPACE-TIME INTO
SPACE AND TIME IN A GRAVITATIONAL FIELD
[293]
XXXII. THE PRINCIPLES OF CONSERVATION [305]
XXXIII. OTHER ASPECTS OF THE GRAVITATIONAL
EQUATIONS
[310]
XXXIV. THE FINITENESS OF THE UNIVERSE[313]
XXXV. THE IMPORTANCE OF SPACE-TIME, AND
THE PRINCIPLE OF ACTION
[347]
XXXVI. THE MYSTERY OF MATTER[356]
XXXVII. THE THEORIES OF WEYL AND EDDINGTON[360]
PART IV
THE METHODOLOGY OF SCIENCE
XXXVIII. THE METHODOLOGY OF SCIENCE[373]
XXXIX. THE CO-ORDINATION OF PHYSICAL FACTS
ACCOMPLISHED BY RELATIVITY
[474]
XL. THE GENERAL SIGNIFICANCE OF THE THEORY OF
RELATIVITY
[481]
APPENDICES
I. THE SPACE AND TIME GRAPHS[509]
II. THE CURVATURES OF SPACE-TIME[524]
III. THE GRAVITATIONAL EQUATIONS[527]
IV. SPACE, GRAVITATION AND SPACE-TIME[531]