Bartholomäus Reisacher

Bartholomäus Reisacher († 1574 or 1575 ) was an Austrian doctor , astronomer and mathematician . He came from Waltenstein in Carinthia ; his name can be found in variations such as Barptolemaeus or Reysacher .

De mirabili Novae ac splendidis stellae ... title page (1573)

Live and act

Reisacher was the personal physician of Emperor Maximilian II and a colleague of Paul Fabricius . He published calendars in Vienna and wrote a treatise De mirabili Novae ac splendidissimae stellae on the supernova known today as SN 1572 . He was a professor of mathematics in Vienna , but also of medicine; in the summer semester 1563 and in the summer semester 1572 he was dean of the Medical Faculty of the University of Vienna . In 1570 he was rector of the university.

In his Almanch (for 1575) he gave the times for the rising and setting of the sun as well as the periods in between, i.e. day and night lengths, for central European locations.

Works

Almanac by Barptolomeum Reysacher, the Ertzney Doctor, also an Ersamen Landschetzt in Carntn ordered Physicum, made on the Stat Wienn, dits MDLXIII (1563.) Jar. Michael Zimmerman, Vienna undated (1562).
Doctorum in Viennensi academia brevis depictio . Egidius Aquila, Vienna (1551). Photomechanical reprint by the Universitäts-Bund Alma Mater Rudolphina, 1968.
De mirabili Nouæ ac splendissimæ Stellæ, Mense Nouembri anni 1572 primum conspectæ, ac etiam nunc apparentis, Phoenomeno . Vienna 1573. Digitized version at the Vienna University Library ( eBooks on Demand ). ("About the wondrous appearance of the new and brightly shining star, which was first seen in November 1572 and is still visible even now.")
Almanac (for 1575). Vienna no year (probably 1574).

Single receipts

↑ Acta Facultatis Medicae Universitatis Vindobonensis , Vol. 4, ed. by Leopold Senfelder. Vienna 1908.
↑ According to Franz Graf-Stuhlhofer : Tradition (s) and empiricism in early modern natural research . In: Helmuth Grössing , Kurt Mühlberger (ed.): Science and culture at the turn of the ages. Renaissance humanism, natural sciences and everyday university life in the 15th and 16th centuries (= writings from the archives of the University of Vienna; 15). Göttingen 2012, pp. 63–80, there p. 79.

personal data
SURNAME	Reisacher, Bartholomäus
BRIEF DESCRIPTION	Austrian mathematician, astronomer, physician
DATE OF BIRTH	15th century or 16th century
DATE OF DEATH	1574

[1] Acta Facultatis Medicae Universitatis Vindobonensis , Vol. 4, ed. by Leopold Senfelder. Vienna 1908.

[2] According to Franz Graf-Stuhlhofer : Tradition (s) and empiricism in early modern natural research . In: Helmuth Grössing , Kurt Mühlberger (ed.): Science and culture at the turn of the ages. Renaissance humanism, natural sciences and everyday university life in the 15th and 16th centuries (= writings from the archives of the University of Vienna; 15). Göttingen 2012, pp. 63–80, there p. 79.