Ibn al-Shatir
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ʿAbu al-Ḥasan Alāʾ al‐Dīn bin Alī bin Ibrāhīm bin Muhammad bin al-Matam al-Ansari, known as Ibn al-Shatir or Ibn ash-Shatir was an Arab astronomer, mathematician and engineer. He worked as muwaqqit in
Ibn al-Shatir's model for the appearances of Mercury, showing the multiplication of epicycles in a Ptolemaic enterprise
Gravure originale du compas parfait par Abū Sahl al Qūhī
Nicolaus Copernicus
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Nicolaus Copernicus was a Renaissance polymath who formulated a model of the universe that placed the Sun rather than Earth at its center. The publication of Copernicus's model in his book De revoluti
Ibn al-Shatir
…epicycle (the Tusi-couple), departing from the Ptolemaic system in a way that was mathematically identical (but conceptually very different) to what Nicolaus Copernicus did in the 16th century. This new planetary model was published in his work the al-Zij al-jadid (الزيج الجديد The New Planetary Handbook.) Before the…
"Toruń portrait" (c. 1580)
Copernicus's Toruń birthplace (ul. Kopernika 15, left). Together with no. 17 (right), it forms Muzeum Mikołaja Kopernika.
Copernicus's maternal uncle, Lucas Watzenrode the Younger
Collegium Maius at Kraków University, Copernicus's Polish alma mater