Excerpt from Reports on Observations of the Total Eclipse of the Sun: August 7, 1869
Plate I. View of the temporary observatory at Des Moines, occupied by Professors Harkness and Eastman, and Dr. Curtis. II. Ground plan of the above. Aa. Observing room. A. Door. Bbb. Shelves. 0. Table. (1. Professor Eastman's telescope. 6. Professor Harkness's telescope. F. The equatorial for photography. 9. Tripod stand for ehronometer. B. Photographic. Dark-room. Kh. Doors. Ii. Dumb-waiters for passing plate-holders in and out of darkroom. Kk. Windows, closed by shutters. 111. Shelves. M. Trough of water, holding the baths for negatives. A. Trough with grooved sides for fixingobath. O. Sink, composed of a wash-tub with India rubber waste-pipe. P. Barrel of water, with pipe and stop-cock projecting through wall of dark-room. III. Triangulation connecting the various temporary observatories at Des Moines in August, 1869. IV. Spectroscope used by Professor Harkness. V. Spectra of the corona and red prominences, observed by Professor Harkness. VI. Curves showing the readings of the barometer and thermometer, by Professor Eastman. VII. Curves showing the readings of the wet bulb and sun thermometers, by Professor Eastman. VIII. Curves showing the readings of the actinometer and photometer, by Professor Eastman. IX. Colored drawings of the totally eclipsed sun as seen at Des Moines, by Professor Eastman. X. Fac-simile of Dr. Curtis's first photograph of the totally eclipsed sun at Des Moines. XI. Fac-simile of Dr. Curtis's second photograph of the totally eclipsed sun at Des Moines.
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Excerpt from Reports on Observations of the Total Eclipse of the Sun: August 7, 1869
Plate I. View of the temporary observatory at Des Moines, occupied by Professors Harkness and Eastman, and Dr. Curtis. II. Ground plan of the above. Aa. Observing room. A. Door. Bbb. Shelves. 0. Table. (1. Professor Eastman's telescope. 6. Professor Harkness's telescope. F. The equatorial for photography. 9. Tripod stand for ehronometer. B. Photographic. Dark-room. Kh. Doors. Ii. Dumb-waiters for passing plate-holders in and out of darkroom. Kk. Windows, closed by shutters. 111. Shelves. M. Trough of water, holding the baths for negatives. A. Trough with grooved sides for fixingobath. O. Sink, composed of a wash-tub with India rubber waste-pipe. P. Barrel of water, with pipe and stop-cock projecting through wall of dark-room. III. Triangulation connecting the various temporary observatories at Des Moines in August, 1869. IV. Spectroscope used by Professor Harkness. V. Spectra of the corona and red prominences, observed by Professor Harkness. VI. Curves showing the readings of the barometer and thermometer, by Professor Eastman. VII. Curves showing the readings of the wet bulb and sun thermometers, by Professor Eastman. VIII. Curves showing the readings of the actinometer and photometer, by Professor Eastman. IX. Colored drawings of the totally eclipsed sun as seen at Des Moines, by Professor Eastman. X. Fac-simile of Dr. Curtis's first photograph of the totally eclipsed sun at Des Moines. XI. Fac-simile of Dr. Curtis's second photograph of the totally eclipsed sun at Des Moines.
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.
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Paperback. Zustand: New. Print on Demand. This book presents the findings of an 1869 expedition to observe a total solar eclipse in Iowa. The expedition was led by renowned astronomer Simon Newcomb and included Professors William Harkness and J. R. Eastman. The report provides detailed accounts of the observations and data collected during the eclipse, including descriptions of the visible phenomena and the use of various instruments to measure and record the event. The observations of Newcomb and his team not only confirmed existing scientific theories about solar eclipses, but also provided valuable insights into the structure and composition of the sun's corona. Through careful analysis of the data, the researchers were able to glean crucial information about the sun's atmosphere and make new discoveries about the physical processes that drive solar activity. The findings presented in this book have since become foundational knowledge in the field of solar astronomy. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334033704_0
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