Jan. 8, 2025
Tusi Couple
Tusi couple - 13th century CE sketch by Nasir al-Din Tusi. Generates a linear motion as a sum of two circular motions. Invented for Tusi's planetary model.
An animated model of a Tusi couple
The County of Nassau - Germany
County of Nassau and surrounding areas.
The Principality of Orange
Principality of Orange (from Blaeu's Atlas 1627)
