The Spectra of Stars of Secchi's Fourth Type is a book written by George Ellery Hale in 1908. The book is a detailed study of the spectra of stars that were classified as belonging to the fourth type by Italian astronomer Angelo Secchi. Hale, who was an American astronomer, was interested in understanding the composition and properties of these stars, which were known for their unique spectral characteristics.The book begins with an introduction to the history of the study of stellar spectra and the development of Secchi's classification system. Hale then presents his observations and analyses of the spectra of stars of the fourth type, including detailed descriptions of the spectral lines and bands that he observed.Hale also discusses the physical properties of these stars, including their temperatures, densities, and chemical compositions. He compares his findings to those of other astronomers and presents his own theories about the nature of these stars.Overall, The Spectra of Stars of Secchi's Fourth Type is a comprehensive and detailed study of a unique class of stars that were of great interest to astronomers of the early 20th century. The book is an important contribution to the field of stellar spectroscopy and remains a valuable resource for astronomers today.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.
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This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.
Vendeur : THE SAINT BOOKSTORE, Southport, Royaume-Uni
Paperback / softback. Etat : New. This item is printed on demand. New copy - Usually dispatched within 5-9 working days. N° de réf. du vendeur C9781167192548
Quantité disponible : Plus de 20 disponibles