Bøger af John Louis Emil Dreyer

Bidrag Til Bestemmelse Af Praecessionskonstanten er en bog skrevet af John Louis Emil Dreyer i 1882. Bogen beskriver hans bidrag til bestemmelsen af praecessionskonstanten, som er en konstant, der bruges i astronomi til at beskrive bev�����gelsen af ��������������Jorden og dens akse. Dreyer beskriver ogs������ sin forskning i forhold til andre astronomiske konstanter og teorier. Bogen er skrevet p������ dansk og henvender sig prim�����rt til astronomer og videnskabsfolk.This Book Is In Danish.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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Founded as the Astronomical Society of London in 1820, this illustrious organisation received its royal charter in 1831. It has counted some of the world's greatest astronomers among its members, most notably its first president, Sir William Herschel, whose family archive forms part of its extensive library. Now based in Burlington House in Piccadilly, it continues to publish journals, award medals and prizes, and support education and outreach work. Following the society's centenary, this survey of its history appeared in 1923 and comprises contributions from leading astronomers of the early twentieth century. The extracts from primary sources include the diary entry of Sir John Herschel, son of William, recording the dinner at which the society's formation was discussed. The work also provides insights into how the society was able to take advantage of imperial expansion to collect observations and data from around the world, fuelling the Victorian pursuit of scientific knowledge.

Famous for his metal prosthetic nose, and for being associated with 'unlucky' days in Scandinavian folklore, Tycho Brahe (1546-1601) made the most accurate naked-eye astronomical measurements of his day. Cataloguing more than 1,000 new stars, his stellar and planetary observations helped lay the foundations of early modern astronomy. John Louis Emil Dreyer (1852-1926) was a fellow Dane, but he spent much of his working life in Ireland. When he was fourteen, he had read a book about Brahe and this inspired him to 'be an astronomer and nothing else'. First published in 1890, Dreyer's biography of his hero remained the definitive work for more than a century. He sets out to illuminate not simply the life of his subject, but also the lives and work of Brahe's contemporaries and the progress of science in the sixteenth century.

"Tycho Brahes fortjenester af astronomien" er en artikel af den dansk-irske astronom John Louis Emil Dreyer om den danske videnskabsmand Tycho Brahe (1546-1601). Som astronom foretog Brahe de mest nøjagtige målinger af himmellegemet med det blotte øje i sin tid og hans observationer over stjerner og planeter blev grundstenen for den tidlige moderne astronomi. I denne artikel belyser Dreyer ikke blot Brahes liv som videnskabsmand og grundlægger af astronomien som vi kender den i dag, men beskriver også hans samtid og videnskabens fremskridt i det 16. århundrede.John Louis Emil Dreyer (1852-1926) var en dansk-irsk astronom og forfatter. Dreyer blev født i København, men drog tidligt i sit liv til Irland for at arbejde med og studere teleskoper og astronomi. Som forfatter udgav han det ambitiøse opslagsværk "Nyt generelt katalog over stjernetåger og stjernehobe", som stadig anvendes den dag i dag. I 1916 vandt han hædersprisen Gold Medal of the Royal Astronomical Society for sit bidrag til videnskaben. Dreyer har desuden fået opkaldt et krater på månen efter sig.

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