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WALTHER, BERNHARD (1430-15o4)

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Originally appearing in Volume V28, Page 299 of the 1911 Encyclopedia Britannica.
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WALTHER, BERNHARD (1430-15o4) , See also:German astronomer, was See also:born at See also:Nuremberg in 1430. He was a See also:man of large means, which he devoted to scientific pursuits. When See also:Regiomontanus (q.v.) settled at Nuremberg in 1471, Walther built for their See also:common use an See also:observatory at which in 1484 clocks driven by weights were first used in astronomical determinations. He further brought into prominence the effects of See also:refraction in altering the apparent places of the heavenly bodies, and substituted See also:Venus for the See also:moon as a connecting-See also:link between observations of the See also:sun and stars. Walther established a See also:printing-See also:press, from which some of the earliest See also:editions of astronomical See also:works were issued. His observations, begun in 1475 and continued until his See also:death in May 1504, were published by J. Schoner in 1544, and by W. See also:Snell in 1618, as an appendix to his Observationes Hassiaceae. See J. G. Doppelmayr, Hist. Nachricht von den niirnbergischen Mathematicis, p.

23 (1730); G. A. Will, Nurnbergisches Gelehrten-Lexikon, vii. 381 (1806); J. F. See also:

Montucla,Hist. See also:des mathematiques, i. 546; J. S. See also:Bailly, Hist. de See also:Paste. moderne, i. 319; E. F. Apelt, See also:Die See also:Reformation der Sternkunde, p.

54; J. P. von Wurzelbaur, Uranies Noricae basis astronomica (1719) ; J. F. Weidler, Hist.astronomiae, p. 322; A. G. Kastner, Geschichte der Mathematik, ii. 324; Mitteilungen des Vereins See also:

fur Gesch. der Stadt Nurnberg, vii. 237 (1888) (H. Petz) ; R. See also:Wolf, Gesch. der Astr. p. 92, &e.

End of Article: WALTHER, BERNHARD (1430-15o4)

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