FOREWORD
THIS book contains a collection of the papers on Physical subjects written by Sir Jagadis Bose. A considerable number of these were written some thirty years ago, shortly after the publication of Hertz's experiments on Electric Waves when the study of the properties of electric waves was being pursued with great vigour. This study was facilitated by the method introduced by Bose, of generating electrical waves of shorter wave length than those in general use. By this method he obtained important results on coherence, polarization, double refraction and rotation of the plane of polarization which are described in the papers collected in this volume. In addition to the purely physical papers there are others which describe the beginnings of Sir Jagadis' application of physical methods to the study of living matter, a subject to which most of his work in recent years has been devoted. The papers make very agreeable reading for the author is never dull. Another aspect of these papers is that they mark the dawn of the revival in India, of interest in researches in Physical Science; this which has been so marked a feature of the last thirty years is very largely due to the work and influence of Sir Jagadis Bose.
Irmily Lodge, Cambridge;
August 16, 1926.
