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THE PRESSURE OF LIGHT

THE ROMANCE OF SCIENCE

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J. H. POYNTING, Sc.D., F.R.S.

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* OCT 15 1935

• Caduenir

LONDON
SOCIETY FOR PROMOTING CHRISTIAN KNOWLEDGE
NORTHUMBERLAND AVENUE, w.c. ; 43, QUEEN VICTORIA STREET, E.C..

BRIGHTON : 129, NORTH STREET
New York: E. S. GORHAM

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BREAD STREET HILL, E.C., AND

BUNGAY, SUFFOLK.

QC 467 P7

PREFACE

In the course of the last few years the author has lectured on the Pressure of Light in many places. Some of the lectures have already been published in full or in abstract. In this book the substance of these lectures is set forth more.completely and in greater detail than was possible in any one lecture.

For readers who desire to study the mathematical calculations involved in the theory of the subject, a series of notes is appended.

July 1910.

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