Excerpt from Popular Lectures on Scientific SubjectsIN 1891 the seventieth birthday of Hermann von Helm holtz, and the forty-ninth anniversary of his taking the degree of Doctor of Medicine, was celebrated in Berlin in a manner which, whether for its universality or import ance, has, perhaps, never fallen to the lot of a Man of Science during his lifetime.The demand for a new edition of the translation of the two volumes of Von Helmholtz's Popular Scientific Lectures suggests that this is an appropriate occasion for a re-issue under conditions which make them accessible to a larger circle of readers.The present edition is identical with the preceding ones; discussing as they do, with the hand of a master, fundamental scientific problems, these Lectures are not likely to be soon out of date.To the second volume has been added a remarkable autobiographical account of the Author's scientific career and development, which formed the subject of an address given by Von Helmholtz in reply to the addresses of congratulation on the occasion of his Jubilee, This is taken, by kind permission of the publisher, M. Hirschwald, from a collection of the addresses and speeches delivered on that occasion.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.

Popular Lectures on Scientific Subjects (Classic Reprint)

Health, Fitness & Dieting

Hermann von Helmholtz

Psychology & Counseling

Forgotten Books

<p>The most important work ever produced in the field of physiological optics, this classic is a model of scientific method and logical procedure, and it remains unmatched in its thorough and accessible approach.<BR>This is the third in a three-volume republication of the definitive English translation of "Handbuch der Physiologischen Optik, " originally published by The Optical Society of America in 1924 and containing everything that was known about physiological optics up until that time. The substratum consists of the data that Helmholtz furnished in the two nineteenth-century German editions that appeared during his lifetime. These volumes also contain extensive supplementary matter that Nagel, Gullstrand, and Kries incorporated in the third German edition of 1911, as well as significant new material prepared for the 1924 English translation by C. Ladd-Franklin, Gullstrand, and Kries, with copious annotations by James P. C. Southall that brought the work up to date with current research.<BR>Volumes I and II discuss the dioptrics of the eye and the sensations of vision;Volume III examines the perceptions of vision. Its topics include eye movements; the monocular field of vision; direction of vision; perception of depth; binocular vision; and many other highly important topics. Appendixes cover later findings on spatial configuration in vision and the theory of binocular instruments. Indexes for all three volumes are organized by subject and author.</p>

Treatise on Physiological Optics, Volume III

Dover `

Treatise on Physiological Optics

Dover Publications. Inc.

Excerpt from Popular Lectures on Scientific SubjectThe favour with which the first series of Professor Helmholtz's Lectures has been received would justify, if a justification were needed, the publication of the present volume.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.

Popular Lectures on Scientific Subject (Classic Reprint)

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