Cosmology in medieval Islam empirical testing. His work thus marked a turning point in astronomy, which may be considered a "Scientific Revolution before the Renaissance". His rectified model was later adapted into a heliocentric model by Copernicus, which was mathematically achieved by reversing the direction of the last vector connecting the Earth to the Sun. In the published version of his masterwork, "De revolutionibus orbium coelestium", Copernicus also cites the theories of al-Battani and Averroes as influences. An area of active discussion in the Maragheh school, and later the Samarkand and Istanbul observatories, was the possibility of the Earth's rotation. Supporters of this theory
The House of the Rising Sun that the song is about a woman who killed her father, an alcoholic gambler who had beaten his wife. Therefore, the House of the Rising Sun may be a jailhouse, from which one would be the first person to see the sunrise (an idea supported by the lyric mentioning "a ball and chain," though that phrase has been slang for marital relationships for at least as long as the song has been in print). Because women often sang the song, another theory is that the House of the Rising Sun was where prostitutes were detained while being treated for syphilis.