The Meaning of Relativity By Albert Einstein

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The Meaning of Relativity

‘He was unfathomably profound – the genius among

geniuses who discovered, merely by thinking about it,

that the universe was not as it seemed.’

Time

‘Einstein’s little book serves as an excellent tying

together of loose ends and as a broad survey of the

subject.’

Physics Today

The Meaning of Relativity

Albert

Einstein

Translated by Edwin Plimpton Adams, with

Appendix I translated by Ernst G. Straus and

Appendix II by Sonja Bargmann

Vier Vorlesungen ueber Relativitaetstheorie
first published 1922 by Vieweg
English edition first published in United Kingdom 1922
by Methuen
Second edition published 1937
Third edition with an appendix published 1946
Fourth edition with further appendix published 1950
Fifth edition published 1951
Sixth revised edition published 1956
all by Methuen
First published in Routledge Classics 2003
by Routledge
11 New Fetter Lane, London EC4P 4EE
Routledge is an imprint of the Taylor & Francis Group
© 1922, 2003 The Hebrew University of Jerusalem
All rights reserved. No part of this book may be reprinted
or reproduced or utilised in any form or by any electronic,
mechanical, or other means, now known or hereafter
invented, including photocopying and recording, or in
any information storage or retrieval system, without
permission in writing from the publishers.
British Library Cataloguing in Publication Data
A catalogue record for this book is available from the British Library
ISBN 0–415–28588–7 (pbk)
This edition published in the Taylor & Francis e-Library, 2004.
ISBN 0-203-44953-3 Master e-book ISBN
ISBN 0-203-45770-6 (Adobe eReader Format)

This book, originally published in 1922, consisted of the text

of Dr. Einstein’s Stafford Little Lectures, delivered in May 1921

at Princeton University. For the third edition, Dr. Einstein

added an appendix discussing certain advances in the theory

of relativity since 1921. To the fourth edition, Dr. Einstein

added Appendix II on his Generalized Theory of Gravitation.

In the fifth edition the proof in Appendix II was revised.

In the present (sixth) edition Appendix II has been rewritten.

This edition and the Princeton University Press fifth

edition, revised (1955), are identical.

The text of the first edition was translated by Edwin Plimpton

Adams, the first appendix by Ernst G. Straus and the second

appendix by Sonja Bargmann.

CONTENTS

Space and Time in Pre-Relativity Physics 1
The Theory of Special Relativity 24
The General Theory of Relativity 57
The General Theory of Relativity (continued) 81
Appendix I On the ‘Cosmologic Problem’ 112
Appendix II Relativistic Theory of the
Non-symmetric Field 136
index 171