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Encyclopedia Britannica



WALTHER, BERNHARD (1430-15o4)

This article appears in Volume V28, Page 299 of the Encyclopedia Britannica.

Encyclopedia Britannica - Main :: VIR-WAT
WALTHER, BERNHARD (1430-15o4) ,
German
  astronomer, was
born
  at
Nuremberg
  in 1430. He was a man of large means, which he devoted to scientific pursuits. When
Regiomontanus
  (q.v.) settled at
Nuremberg
  in 1471, Walther built for their common use an
observatory
  at which in 1484 clocks driven by weights were first used in astronomical determinations. He further brought into prominence the effects of refraction in altering the apparent places of the heavenly bodies, and substituted
Venus
  for the moon as a connecting-link between observations of the sun and stars. Walther established a printing-
press
 , from which some of the earliest
editions
  of astronomical works were issued. His observations, begun in 1475 and continued until his death in May 1504, were published by J. Schoner in 1544, and by W. 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. Montucla,Hist. des mathematiques, i. 546; J. S. Bailly, Hist. de Paste. moderne, i. 319; E. F. Apelt, Die
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 fur Gesch. der Stadt Nurnberg, vii. 237 (1888) (H. Petz) ; R.
Wolf
 , Gesch. der Astr. p. 92, &e.


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