Anonymous treatise on the construction and use of the linear astrolabe (أسطرلاب خطّي), an instrument also known as 'al-Ṭūsī's Rod' (عصا الطوسي), named after its inventor Sharaf al-Dīn al-Muẓaffar ibn Muḥammad al-Ṭūsī (شرف الدين المظفر بن محمد الطوسي; d. 1213). The Persian table of contents (f. ...
Maqālah fī ṣūrat al-kusūf مقالة في صورة الكسوف Alhazen ابن الهيثم
Scope & Content:
Treatise on the observation of solar eclipses through a camera obscura by Abū ‘Alī al-Ḥasan ibn al-Ḥasan ibn al-Haytham (أبو علي الحسن بن الحسن بن الحسن بن الهيثم; d. ca 1040). The text contains four diagrams, which are collected on a fold out (f. 34r) following the text. Begins (f. 8v, lines...
Anonymous epitome (تلخيص) of a lost treatise by Sharaf al-Dīn al-Muẓaffar ibn Muḥammad al-Ṭūsī (شرف الدين المظفر بن محمد الطوسي; d. 1213) on cubic equations fundamental to algebraic geometry (see the epitomiser's preface, f. 35, lines 2-7, transcribed below and edited by Rashed in Sharaf al-Dīn...
Risālah fī ʿamal ḍilʿ al-musabba‘ al-mutasāwī al-aḍlā‘ fī al-dā‘irah رسالة في عمل ضلع المسبع المتساوي الأضلاع في الدائرة Kūhī, Wayjan ibn Rustum كوهي، ويجن بن رستم
Scope & Content:
Treatise on the construction of an equilateral heptagon within a circle by Abū Sahl Wayjan ibn Rustam al-Kūhī (أبو سهل ويجن بن رستم الكوهي also spelled al-Qūhī [القوهي]; fl. second half of the 10th century). The text contains seven diagrams, which are collected on a fold out (f. 188r) at the en...