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Author: Howard Townsend
Publisher:
ISBN:
Category : Light
Languages : de
Pages : 254
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Book Description
Author: Howard Townsend
Publisher:
ISBN:
Category : Light
Languages : de
Pages : 254
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Book Description
Author: Howard Townsend
Publisher: Forgotten Books
ISBN: 9781396383007
Category : Science
Languages : en
Pages : 20
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Book Description
Excerpt from The Sunbeam and the Spectrascope: Read Before the Albany Institute, Feb. 17th, 1863 If a sunbeam be allowed to enter a darkened room, it falls on the floor and forms a disc of bright light. This is radi ated to the eye which conveys the impression to the brain, and the phenomenon of vision is established. Should the hand he placed in the track of the sunbeam, the sensation of warmth is communicated, and we feel there is heat in the ray. If a piece of paper covered over with chloride of silver, which is purely white, be placed so that the sunbeam falls upon it, a darkened track will be immediately produced over the space the sun's ray has passed, it has liberated the chlorine, leaving the metallic silver. Such remarkable phenomena teach us that we have to deal with agencies in the solar rays, which are in their visi ble effects very dissimilar. 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.
Author: Richard Anthony Proctor
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 156
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Book Description
Author: H. F. Newall
Publisher: Forgotten Books
ISBN: 9780365332510
Category : Science
Languages : en
Pages : 182
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Book Description
Excerpt from The Spectroscope and Its Work White is always regarded as the emblem of purity. Ruthless science tears it to pieces and convinces us that it is the most complex of all the colours in Nature. The red of a tulip, the green flash Of an emerald, the purple of a violet, all seem to give us something more than the whiteness of the lily, such slaves are we to ideas gained from laying on paint. The truth is, they all give us much less. The lily gives back all the light that falls upon it the tulip, the violet, and the emerald, each lighted by the same sunlight, gives back only a small part and suppresses all the rest not one of the three adds anything to the sunlight which makes them visible each abstracts a great deal from it and suppresses it, and shines with but a small part of the light that falls upon it. Hence, in the evening, when the daylight dies away, the white lilies, giving back all the light that falls upon them, seem to stand out visible long after the gayer flowers have dis appeared in the dusk. 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.
Author: Charles Alexander Macmunn
Publisher: Forgotten Books
ISBN: 9780428262587
Category : Science
Languages : en
Pages : 244
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Book Description
Excerpt from The Spectroscope in Medicine The Spectroscope seems likely to be of almost as great use in Medicine as it has already proved in terrestrial, solar, and stellar Chemistry. Hitherto the great hindrances to its use have been erroneous ideas as to the difficulties which seem to surround this method of investigation; such ideas having arisen from want of a simple treatise on the in strument and its applications to Physiology and Pathology. In the following pages such information will be found, and the publication of this little book will, I trust, lead to a more extended use of the spectroscope, which has already done good work in Physiology and Pathology, and has corrected many erroneous ideas regarding various animal pigments. 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.
Author: Alfred Tuckerman
Publisher: Forgotten Books
ISBN: 9780428069377
Category : Science
Languages : en
Pages : 438
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Book Description
Excerpt from Index to the Literature of the Spectroscope After the great part of the material was collected it was divided into such abject: as the titles indicated, in alphabetical order, easy finding being constantly kept in view. Titles have often been repeated more thin once so as to make sure of their Mg found. Finally, at the sog Mon of the Smhhsoninn Institution, the List of Authors was added. 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.
Author: J. Norman Lockyer
Publisher: Forgotten Books
ISBN: 9780266535539
Category : Science
Languages : en
Pages : 144
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Book Description
Excerpt from The Spectroscope and Its Applications The following Lectures were delivered at the Society of Arts in the year 1869. They have been carefully revised, and in some parts expanded. 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.
Author: Alfred Tuckerman
Publisher: Forgotten Books
ISBN: 9780666338235
Category : Science
Languages : en
Pages : 386
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Book Description
Excerpt from Index to the Literature of the Spectroscope: 1887-1900, Both Inclusive Measurement of the luminosity and intensity of light reflected from coloured surfaces. Phil. Mag. (5) 27 (1889) 62 - 69. 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.
Author: Alfred Tuckerman
Publisher:
ISBN:
Category : Alchemy
Languages : en
Pages : 1220
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Book Description
Author: Alfred Tuckerman
Publisher:
ISBN:
Category : Spectroscope
Languages : en
Pages : 448
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Book Description
