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Constant differences: Friedrich Wilhelm Bessel, the concept of the observer in early nineteenth-century practical astronomy and the history of the personal equation Published online by Cambridge University Press: 02 May 2007
- Christoph Hoffmann
- 2007
CH. 8 - Describe the work of Friedrich Bessel in studying individual differences in reaction time. - Studocu. Information. AI Chat. Premium. CH. 8. History of Psychology 375 Chapter 8 Notes. Course. History of Psychology (Psyc 375) 84 Documents. University. Athabasca University. Academic year: 2017/2018. Uploaded by: Darline Jacobs.
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So, Bessel compared himself to other astronomers of equal reputation and discovered that the discrepancies between he and they were even larger than those between Maskelyne and Kinnebrook. Again, the differences were remarkably consistent. That led Bessel to develop the personal equation, a correction factor between observers.
Early researches by Friedrich Wilhelm Bessel (1784–1846) in Königsberg and Adolf Hirsch led to the development of a highly precise chronoscope by Mathias Hipp that, in turn, was based on a design by Charles Wheatstone for a device that measured the speed of artillery shells (Edgell & Symes, 1906).
Jan 1, 2006 · From another perspective, psychometrics had been founded in the early years of the 19th century by two astronomers, Friedrich Wilhelm Bessel and Carl Friedrich Gauss. In 1796, Nevil Maskelyne, astronomer royal at the Greenwich Observatory, had dismissed his assistant David Kinnebrook because Kinnebrook reported times of stellar transit nearly a ...
- Lyle V. Jones, David M Thissen
- 2006
Apr 17, 2024 · Friedrich Wilhelm Bessel, German astronomer whose measurements of positions for about 50,000 stars and rigorous methods of observation took astronomy to a new level of precision. He was the first to measure the parallax, and hence the distance, of a star other than the Sun. Learn more about Bessel’s life and work.
Friedrich Wilhelm Bessel (German:; 22 July 1784 – 17 March 1846) was a German astronomer, mathematician, physicist, and geodesist. He was the first astronomer who determined reliable values for the distance from the sun to another star by the method of parallax .
