1 kép Booklassic Great Astronomers: William Parsons (3rd Earl of Rosse)
Booklassic Great Astronomers: William Parsons (3rd Earl of Rosse) E-könyv
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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)
