Jan Ondrejuv

Jan Ondrejuv, also known as Sindel, was a professor of mathematics and astronomy at Charles University in Prague. He and Mikulas of Kadan built the Astronomical Clock in 1410. (PROSE: The Long Step Backward)
Category:15th century individuals
Category:Astronomers from the real world
Category:Educators from the real world
Category:Human professors
Category:Mathematicians from the real world