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Bedankt voor het vertrouwen het afgelopen jaar! Om jou te bedanken bieden we GRATIS verzending aan op alles gedurende de hele maand januari.

Afhalen na 1 uur in een winkel met voorraad
Gratis thuislevering in België
Ruim aanbod met 7 miljoen producten

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Omschrijving

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.