Abu Bakr Muhammad bin Zakaryya al-Razi: the unchallenged chief physician of the Muslims, the Arab Galen, the most brilliant genius of the Middle Ages.

He was a famous medical practitioner and teacher who pioneered several discoveries in pre-modern chemistry, having for the first time divided substances into animal, vegetable, and mineral. His famous book entitled "Kitab al-Asrar" (Book of Secrets) deals with substances, equipment, and processes, thus establishing the "laboratory manual" literary genre. The chemical processes mentioned by al-Razi include distillation, calcination, solution, evaporation, crystallization, and more.

This stained glass window in the Princeton University Chapel commemorates the contribution of al-Razi to the science of medicine.

The qanun is a zither-like musical instrument, trapezoidal in shape. The instrument's 26 triple courses of strings are made from nylon or gut and metal-wound silk. The musician plucks the strings with short pieces of horn. The pitch of each course can be altered a whole step, a half step, or a quarter step by raising or lowering fixed metal levers that stop the strings at specific distances.

This image shows a Qanun player inspired from the amazing tales of The Thousand and One Nights.