Thursday, March 10th, 2011
Barbara Ellmerer
Archive for the 'Instrument/Pointer' Category
Measuring the World – Preparing for a shot
Thursday, March 10th, 2011
Instruments for shaping the view and preparing for target setting. Sebastian Münster, Rudimenta mathematica (Basel: Henricus Petri, 1551), Zentralbibliothek Zürich, Alte Drucke und Rara, T 131, Title.
Measuring – Stars, Buildings, Cannonballs III
Wednesday, March 9th, 2011
How to relate the angle of a cannon to the height of the destination of the cannonball. Sebastian Münster, Rudimenta mathematica (Basel: Henricus Petri, 1551), Zentralbibliothek Zürich, Alte Drucke und Rara, T 131, p. 29.
Measuring – Stars, Buildings, Cannonballs II
Wednesday, March 9th, 2011
Measuring the height of a tower with a quadrant. Sebastian Münster, Rudimenta mathematica (Basel: Henricus Petri, 1551), Zentralbibliothek Zürich, Alte Drucke und Rara, T 131, p. 6.
Measuring – Stars, Buildings, Cannonballs I
Wednesday, March 9th, 2011
Quadrant. Sebastian Münster, Cosmographia (First edition Bale 1544, here: Basel: Henricus Petrus, 1550), Zentralbibliothek Zürich, Alte Drucke und Rara, K 98, p. 18.
Instrument for the Drawing of Wiggly Lines
Tuesday, March 8th, 2011
Albrecht Dürer, Unterweisung oder Underrichtung der Messung, in: Opera (Arnhem: Johann Jansen, 1604), Zentralbibliothek Zürich, Alte Drucke und Rara, ZB XXII, D. III.
First: The Poles of the Sky
Friday, March 4th, 2011
Instrument for measuring the heigth of the celestial pole. Peter Apian (1495-1552) discusses the use of compasses for a description of the world and map making. Gemma Frisius (1508-1555) comments on this. The book (first 1540) illustrates the impact of astronomical instruments in training human vision and focusing on pointers: Cosmographia (Antverpiae; Ioannis Bellerum, 1584), Zentralbibliothek Zürich, Alte Drucke und Rara, Ry 245, p. 10.