PL EN


2015 | 60 | 3 | 33–53
Article title

Radius mathematicus Joachima Stegmanna

Title variants
EN
Joachim Stegmann’s Radius Mathematicus
Languages of publication
PL
Abstracts
EN
Joachim Stegmann the elder (1595–1633), Brandenburg born theologian of the Polish Brethren, was also a mathematician. In this area of his activity, he published a textbook for the Unitarian school in Raków, Institutionum Mathematicarum Libri Duo (Two Books of Mathematical Sciences, Raków 1630), and two works describing multifunctional surveying devices: Circinus Quadrantarius (Quadrant Compass, Berlin 1624) and Radius Mathematicus (Mathematical Walking Stick, Berlin 1626). This paper deals with Stegmann’s Radius Mathematicus, which is a description, or rather a manual, of a walking stick of hexagonal section. Each of its sides was engraved with scales of various surveying devices. There were a cylinder sundial, a scale of quadrant for determining the altitude of Sun, a cross staff, a scala altimetra for determining the height of an object basing on the length of its shadow, a caliber gauge for determining the weight of cannonballs, a length of an ell and a gauging rod for surveying barrels. Some surveys had to be conducted with a separate gnomon. The stick was probably about 130 cm long and the gnomon was about 30 cm long. The paper is followed by a reproduction of Radius Mathematicus from the Gdańsk Library of the Polish Academy of Sciences (call number Sa 1 8° adl. 11) and its Polish translation.
Year
Volume
60
Issue
3
Pages
33–53
Physical description
Contributors
  • Instytut Historii Nauki im. L. i A. Birkenmajerów PAN Warszawa
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.desklight-79782f25-d3d0-4dd7-989c-514140a9d851
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