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Excerpt from Curiosities of Light and Sight The following chapters are based upon notes of several unconnected lectures addressed to audiences of very different classes in the theatres of the Royal Institution, the London Institution, the Leeds Philosophical and Literary Society, and Caius House, Battersea. In preparing the notes for publication the matter has been re-arranged with the object of presenting it, as far as might be, in methodical order; additions and omissions have been freely made, and numerous diagrams, illustrative of the apparatus and experiments described, have been provided. I do not know that any apology is needed for offering the collection as thus re-modelled to a larger public. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
What is light? Where are optics and photonics present in our lives and in nature? What lies behind different optical phenomena? What is an optical instrument? How does the eye resemble an optical instrument? How can we explain human vision? This book, written by a group of young scientists, answers these questions and many more.
Everyone who has learnt the manipulation of light and of lenses by the practical use of a magic lantern or by photography which involves a little more than the pressing of buttons and the sending of films to be developed, knows enough to follow Mr. Bidwell's lectures on light and sight. Mr. Bidwell is an authority on his subject, but he has the special faculty of explaining technical matters in simple language, and he has devised a series of experiments which can be repeated or modified easily. After a general chapter on the nature of light, he shows the relation of the eye to radiations, and makes extremely plain the troublesome subjects of complementary colors, chromatic dispersion, astigmatism and so forth. Light, treated in this experimental fashion, forms an admirable introduction to science. There is a wide field for cultivating the powers of observation and for the faculties by which observations are combined and analyzed. In the interpretation of the knowledge gained in this way, the fundamental problem of science or of philosophy is raised in a direct fashion; the problem as to how far our perceptions correspond with what may be called objective facts, and how far they are merely functions of our perceiving apparatus. -The Saturday Review, Vol. 90 [1901]