Download or read book A Physical Study of the Firefly written by William Weber Coblentz and published by Buchanan Press. This book was released on 2011-10 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Download or read book A Physical Study of the Firefly C written by William W. Coblentz and published by . This book was released on 1912 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Physical Study of the Firefly Classic Reprint written by William W. Coblentz and published by . This book was released on 2016-06-27 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Physical Study of the Firefly Aside from this utilitarian question, there are others of equal importance. For example, we know that closely related species of fire ies emit differently colored light, variously described as blue, green, orange, etc. IS this color variation a subjective phenomenon, resulting from the variation in color sensibility of the eye with variation in intensity, * or is it an Objective reality? If the latter, then what are the laws governing the light emission? It is almost too much to hope to solve this problem in the near future, but it seems possible to settle definitely the question whether or not the light differs in composition and hence is blue, green, or orange, as observed. This knowledge is Obtained from the spectral energy curves of the light from various fire ies, to be described presently. Experimenters have become so accustomed to thinking of the artificial production of light as being accompanied by a large amount of invisible radiation that no experiments would be complete without a repetition of Langley's search for infra-red radiation. Accordingly this question has also been given attention in this paper. In View of the doubt in many investigators' minds as to whether the color of the light from the fire y is due to a variation in intensity rather than to an actual variation in composition, it seemed worth while to attempt to settle the question by making a thorough study of the light emitted by various species of this insect. Accordingly, the photographic work was continued for about four weeks, during which time 152 photographic exposures were made, on two spectrometers differing widely in dispersion, the time of exposure varying from 30 seconds to 5 hours. The time consumed in actual photography, in holding the insects on the spectrometer slit, was over 56 hours. The histological data is introduced for clearness in discussing the present work, as well as its bearing upon the whole subject. It permits also a discussion of the plausibility of the functions assigned to certain parts of the photogenic organs as viewed from a physical standpoint and more especially from the optical properties of materials. 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."

Download or read book A Physical Study of the Firefly written by William Weber Coblentz and published by . This book was released on 1912 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Physical Study of the Firefly by William W Coblentz written by William Weber Coblentz and published by . This book was released on 1912 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Physical Study of the Firefly written by Coblentz William W 1873-1962 and published by Hardpress Publishing. This book was released on 2013-01 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Download or read book Physical Study of the Firefly written by Thomas James Mathias and published by . This book was released on 1799 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Bulletin written by Indiana State Library and published by . This book was released on 1917 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Bulletin of the Indiana State Library written by Indiana State Library and published by . This book was released on 1905 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book American Journal of Science and Arts written by and published by . This book was released on 1912 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Bulletin written by St. Louis Public Library and published by . This book was released on 1911 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Teachers' bulletin", vol. 4- issued as part of v. 23, no. 9-

Download or read book Bulletin written by Grand Rapids Public Library (Grand Rapids, Mich.) and published by . This book was released on 1917 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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