Great Astronomers:  William Parsons (3rd Earl of Rosse)

Great Astronomers: William Parsons (3rd Earl of Rosse)

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William Parsons, the 3rd Earl of Rosse, (1800–1867) was an Anglo-Irish astronomer who made several large telescopes. His 72-inch telescope, the "Leviathan", built in 1845, was the world's largest telescope until the early 20th century.

The 72-inch (1.8 m) telescope replaced a 36-inch (910 mm) telescope that he had built previously. He had to invent many of the techniques he used for constructing the Leviathan, both because its size was without precedent and because… (plus)

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Langue: Anglais

Publié en: 1907

Nombre de mots: 4 506 mots (≈ 18 minutes)

Source: The Internet Archive http://archive.org/details/greatastronomers00balluoft

Droits: Domaine Public


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