Sevim Tekeli ARTICLES
Coordinates of Piri Reis map
Earliest maps of AmericaLEARN MORE
The earliest maps made of America by Columbus have all...
Figure 1. A depiction of the Maragha Observatory.
Al-Urdi's Article on 'The Quality of Observation'LEARN MORE
Astronomy has for a long time been of keen interest of...
Figure 1. A portrait of Marco Polo (from www.wikipedia.org).
The Oldest Map of Japan Drawn by Mahmud of KashgarLEARN MORE
Although the Japanese map was included for the first time...
Figure 1: The trigonometric functions of an angle q can be constructed geometrically in terms of a unit circle centered at O.
Taqi al Din Ibn Ma’ruf 's Work on Extracting the Cord 2[sup]o[/sup] and Sin 1[sup]o[/sup]LEARN MORE
This article by Professor Sevim Tekeli, a leading historian...
Sextant (mushabbaha bi'l-manâtiq) of Taqî al-Din.
Astronomical Instruments of Tycho Brahe and Taqi al-DinLEARN MORE
Tycho Brahe "was a brilliant astronomer and scientist of...