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James Bradley: Great Astronomers

James Bradley: Great Astronomers

          
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About the Book

James Bradley FRS ( March, 1693 - July 13, 1762 ) was an English astronomer and priest and served as Astronomer Royal from 1742, succeeding Edmond Halley. He is best known for two fundamental discoveries in astronomy, the aberration of light (1725-1728), and the nutation of the Earth's axis (1728-1748). These discoveries were called "the most brilliant and useful of the century" by Jean Baptiste Joseph Delambre, historian of astronomy, athematical astronomer and director of the Paris Observatory, in his history of astronomy in the 18th century (1821), because "It is to these two discoveries by Bradley that we owe the exactness of modern astronomy.In 1742, Bradley was appointed to succeed Edmond Halley as Astronomer Royal; his reputation enabled him to apply successfully for a set of instruments costing GB£1,000; and with an 8-foot quadrant completed for him in 1750 by John Bird, he accumulated at Greenwich in ten years materials of inestimable value for the reform of astronomy. A crown pension of GB£250 a year was conferred upon him in 1752. Bradley retired in broken health, nine years later, to the Cotswold village of Chalford in Gloucestershire. He died at Skiveralls House on 13 July 1762.
About the Author: Sir Robert Stawell Ball FRS (July 1, 1840 - November 25, 1913) was an Irish astronomer who founded the screw theory. He was the son of naturalist Robert Ball and Amelia Gresley Hellicar. He was born in Dublin. Ball worked for Lord Rosse from 1865 to 1867. In 1867 he became Professor of Applied Mathematics at the Royal College of Science in Dublin. There he lectured on mechanics and published an elementary account of the science. In 1874 Ball was appointed Royal Astronomer of Ireland and Andrews Professor of Astronomy in the University of Dublin at Dunsink Observatory. In 1908 he published A Treatise on Spherical Astronomy, which is a textbook on astronomy starting from spherical trigonometry and the celestial sphere, considering atmospheric refraction and aberration of light, and introducing basic use of a generalised instrument.


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Product Details
  • ISBN-13: 9781988357621
  • Publisher: Diamond Publishers
  • Publisher Imprint: Diamond Publishers
  • Height: 203 mm
  • No of Pages: 74
  • Spine Width: 4 mm
  • Width: 133 mm
  • ISBN-10: 1988357624
  • Publisher Date: 14 Apr 2017
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 86 gr


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