Geocentric model knew about Tusi's work or that of the Maragha school. Not all Greeks agreed with the geocentric model. The Pythagorean system has already been mentioned; some Pythagoreans believed the Earth to be one of several planets going around a central fire. Hicetas and Ecphantus, two Pythagoreans of the 5th century BC, and Heraclides Ponticus in the 4th century BC, believed that the Earth rotated on its axis but remained at the center of the universe. Such a system still qualifies as geocentric. It was revived in the Middle Ages by Jean Buridan. Heraclides Ponticus was once thought to have proposed
Gentoo (term) Gentoo (term) Gentoo, also spelled Gentue or Jentue, was a term used by Europeans for the native inhabitants of India before the word Hindu, with its religious connotation, was used to distinguish a group from Muslims and members of other religious groups in India. "Gentio" and "Gentoo" terms were applied historically to indigenous peoples of India; later, to Telugu-speaking persons and their language in then Madras Province (now the Andhra region), as opposed to the Malbars, or Tamil speakers and their language (in what is now Tamil Nadu). An example from the Monsignor Sebastiao Rodolfo Dalgado is "moros, gentivos e