Publisher's Synopsis
Volume VI contains the work Raman did in the last decade of his life. He emphasized the important point that the characteristics of human vision which play a major role in the perception of colour are as important in deciding a quality of a gem or a mineral as its optical properties. He studies in detail the remarkable faculty of the unaided eye to recognize polarized light and also to locate its plane of polarization. Raman investigates the incredible power of the eye to discriminate colour differing by as little as 10A. He describes simple demonstration experiments to measure the intensity at which colour perception is lost for different colours. In addition, he deals with the possibility of a new type of twinkling of stars due to the statistics of photons striking the retina - and describes how to make these observations. The book is full of simple experiments which can be set up and which illustrate many unforeseen aspects of the perception of light and colour.;Readership: scientists, scientific institutes, university libraries, technology institutes and libraries, government laboratories and physics research centres.