PREFACE

OPTICAL PROJECTION A TREATISE ON THE USE OF THE OPTICAL LANTERN CHAPTER I

A TREATISE ON THE USE OF THE LANTERN IN
EXHIBITION AND SCIENTIFIC DEMONSTRATION

BY

LEWIS WRIGHT

AUTHOR OF 'LIGHT: A COURSE OF EXPERIMENTAL OPTICS'

5TH EDITION

RE-WRITTEN AND BROUGHT UP-TO-DATE BY

RUSSELL S. WRIGHT, M.I.E.E.

IN TWO PARTS

PART I

THE PROJECTION OF LANTERN SLIDES

WITH ILLUSTRATIONS

L O N G M A N S ,   G R E E N ,   A N D   C O.
39 PATERNOSTER ROW, LONDON, E.C.

FOURTH AVENUE & 30TH STREET, NEW YORK
BOMBAY, CALCUTTA, AND MADRAS

1920

(A l l   r i g h t s   r e s e r v e d)