ISBN: 0943396468

Alvan Clark & Sons was an American maker of optics that became famous for crafting lenses for some of the largest refracting telescopes of the 19th and early 20th centuries. Founded in 18… Mehr…

Alvan Clark & Sons was an American maker of optics that became famous for crafting lenses for some of the largest refracting telescopes of the 19th and early 20th centuries. Founded in 1846 in Cambridgeport, Massachusetts by Alvan Clark (1804-1887, a descendant of Cape Cod whalers who started as a portrait painter), and his sons George Bassett Clark (1827-1891) and Alvan Graham Clark (1832-1897).[1] Five times, the firm built the largest refracting telescopes, Great refractors, in the world. The Clark firm gained "worldwide fame and distribution", wrote one author on astronomy in 1899.[1]The 18.5-inch (470 mm) Dearborn telescope (housed successively at the University of Chicago, Northwestern University and Adler Planetarium) was commissioned in 1856 by the University of Mississippi. The outbreak of civil war prevented them from ever taking ownership. As a result it was being tested in Cambridgeport when Alvan Graham observed Sirius B in 1862.In 1873 they built the 26-inch (660 mm) objective lens for the refractor at the United States Naval Observatory. In 1883, they build the 30-inch (760 mm) telescope for the Pulkovo Observatory in Russia, the 36-inch (910 mm) objective for the refractor at Lick Observatory was made in 1887, and the 40-inch (1,000 mm) lens for the Yerkes Observatory refractor, in 1897, only ever exceeded in size by the lens made for Great Paris Exhibition Telescope of 1900.The company also built a number of smaller instruments, which are still highly p science,science and math,science and scientists,science and technology Science & Math, Willmann-Bell, Incorporated<

ISBN: 0943396468

Alvan Clark & Sons was an American maker of optics that became famous for crafting lenses for some of the largest refracting telescopes of the 19th and early 20th centuries. Founded in … Mehr…

Alvan Clark & Sons was an American maker of optics that became famous for crafting lenses for some of the largest refracting telescopes of the 19th and early 20th centuries. Founded in 1846 in Cambridgeport, Massachusetts by Alvan Clark (1804-1887, a descendant of Cape Cod whalers who started as a portrait painter), and his sons George Bassett Clark (1827-1891) and Alvan Graham Clark (1832-1897).[1] Five times, the firm built the largest refracting telescopes, Great refractors, in the world. The Clark firm gained "worldwide fame and distribution", wrote one author on astronomy in 1899.[1] The 18.5-inch (470 mm) Dearborn telescope (housed successively at the University of Chicago, Northwestern University and Adler Planetarium) was commissioned in 1856 by the University of Mississippi. The outbreak of civil war prevented them from ever taking ownership. As a result it was being tested in Cambridgeport when Alvan Graham observed Sirius B in 1862. In 1873 they built the 26-inch (660 mm) objective lens for the refractor at the United States Naval Observatory. In 1883, they build the 30-inch (760 mm) telescope for the Pulkovo Observatory in Russia, the 36-inch (910 mm) objective for the refractor at Lick Observatory was made in 1887, and the 40-inch (1,000 mm) lens for the Yerkes Observatory refractor, in 1897, only ever exceeded in size by the lens made for Great Paris Exhibition Telescope of 1900. The company also built a number of smaller instruments, which are still highly used books,books Books, Willmann-Bell<

ISBN: 0943396468

[SR: 3926783], Gebundene Ausgabe, [EAN: 9780943396460], Atlantic Books, Atlantic Books, Book, [PU: Atlantic Books], Atlantic Books, 56797011, Biografien & Erinnerungen, 56820011, Ethno & … Mehr…

[SR: 3926783], Gebundene Ausgabe, [EAN: 9780943396460], Atlantic Books, Atlantic Books, Book, [PU: Atlantic Books], Atlantic Books, 56797011, Biografien & Erinnerungen, 56820011, Ethno & National, 56874011, Fachleute & Akademiker, 56902011, Familie & Kindheit, 56833011, Historisch, 56798011, Kunst & Literatur, 57107011, Memoiren, 56887011, Nachschlagewerke & Sammlungen, 56858011, Politiker & Persönlichkeiten, 1316778031, Regional U.S., 56903011, Reisen, 1316987031, Spezifische Gruppen, 57108011, Sport & Freizeit, 54071011, Genres, 52044011, Fremdsprachige Bücher, 1320311031, Nachschlagewerke, 56441011, Technologie, 56047011, Wissenschaft, 54071011, Genres, 52044011, Fremdsprachige Bücher<

1995, ISBN: 0943396468

[EAN: 9780943396460], Near Fine, [PU: Richmond: Willmann-Bell/ Washington, D.C.: National Museum of American History, Smithsonian Institution, 1995.], SCIENCE, ASTRONOMY, OPTICS, PHYSICS,… Mehr…

[EAN: 9780943396460], Near Fine, [PU: Richmond: Willmann-Bell/ Washington, D.C.: National Museum of American History, Smithsonian Institution, 1995.], SCIENCE, ASTRONOMY, OPTICS, PHYSICS, HISTORY, INSTRUMENTS, TELESCOPES, Second Edition (1st ed., 1968). 298 pp; 121 illus. Original laminated boards. Near Fine, without dust jacket (as issued)., Books<