THE PHYSICS OF WAVES Version date February （波的物理版本日期2月）.pdf

THE PHYSICS OF WAVES Version date - February 15, 2015 THE PHYSICS OF WAVES HOWARD GEORGI Harvard University Originally published by PRENTICE HALL Englewood Cliffs, New Jersey 07632 c ⃝ 1993 by Prentice-Hall, Inc. A Simon Schuster Company Englewood Cliffs, New Jersey 07632 All rights reserved. No part of this book may be reproduced, in any form or by any means, without permission in writing from the publisher. Printed in the United States of America 10 9 8 7 6 5 4 3 Prentice-Hall International (UK) Limited, London Prentice-Hall of Australia Pty. Limited, Sydney Prentice-Hall Canada Inc., Toronto Prentice-Hall Hispanoamericana, S.A., Mexico Prentice-Hall of India Private Limited, New Delhi Prentice-Hall of Japan, Inc., Tokyo Simon Schuster Asia Pte. Ltd., Singapore Editora Prentice-Hall do Brasil, Ltda., Rio de Janeiro Contents 1 Harmonic Oscillation 1 Preview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 The Harmonic Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Small Oscillations and Linearity . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Time Translation Invariance . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.3.1 Uniform Circular Motion . . . . . . . . . . . . . . . . . . . . . . . . 9 1.4 Complex Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .