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BERNHARD WALTHER (1430-15o4)

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Originally appearing in Volume V28, Page 299 of the 1911 Encyclopedia Britannica.
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BERNHARD See also:

WALTHER (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, See also: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: BERNHARD WALTHER (1430-15o4)
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