New PDF release: A to Z of Scientists in Space and Astronomy (2005)(en)(336s)

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By Deborah Todd, Joseph A. Angelo

ISBN-10: 0816046395

ISBN-13: 9780816046393

This reference for normal readers and scholars in highschool and up compiles biographies of approximately one hundred thirty scientists in area and astronomy, from antiquity to the current. each one access offers delivery and demise dates and data on fields of specialization, and examines the scientist's paintings and contributions to the sector, in addition to family members and academic heritage. approximately 50 b&w pictures are incorporated. Entries are listed by way of box, kingdom of beginning, and kingdom of clinical job, and chronologically. Todd is a contract author. Angelo is a retired lieutenant colonel with the USA Air strength.

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The only remaining text found to date written by Aristarchus is a document entitled Treatise on the Sizes and Distances of the Sun and Moon. The significance of this piece has nothing to do with whether the Sun or the Earth is the center of the universe, but rather with the fact that he reasoned, through mathematics and observation of reflected sunlight on the surface of the Moon, a method to determine the relationships between the Moon, Earth, and Sun without the benefit of instruments or trigonometry.

Arago’s active interest in scientific discovery had far-reaching consequences. In 1816 Nicéphor Niepce started work on a solution to making lightsensitive chemicals that would create a permanent photograph, which he originally wanted to use for lithography. Ten years later, Niepce created a solution that worked on an eight-hour exposure. He invited the French painter Louis Daguerre to join him, and when Niepce died in 1833, Daguerre continued the work. Eventually he began to use silver iodide and mercury vapor on the plate, with a hyposulphite of soda solution.

Baade’s interest in finding the center of the Milky Way Galaxy began in earnest in 1937. He expanded his work to include observations of the Sculptor and Fornax dwarf galaxies with Hubble in 1939, and searched for the central star of the Crab Nebula, which he ultimately identified as having resulted from the supernova of 1054. By the 1940s Baade discovered a window of opportunity to gather data on our galaxy. The Milky Way had proved difficult to penetrate because it was so obscured by cosmic dust.

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A to Z of Scientists in Space and Astronomy (2005)(en)(336s) by Deborah Todd, Joseph A. Angelo

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