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...