Ptolemy
Influential Greco-Roman astronomer and geographer known for the Almagest.
Chronology: 100 – 170
Origins & Early Life
Claudius Ptolemy (; Ancient Greek: Πτολεμαῖος, Ptolemaios; Latin: Claudius Ptolemaeus; c. 100 – 160s/170s AD), better known mononymously as Ptolemy, was a Greco-Roman who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science. The first was his astronomical treatise now known as the Almagest, originally entitled Mathēmatikḗ Syntaxis (Μαθηματικὴ Σύνταξις, 'Mathematical Treatise'). The second is the Geography, which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world.
Pivotal Works & Achievements
The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. This is sometimes known as the Apotelesmatika (Αποτελεσματικά, 'On the Effects') but more commonly known as the Tetrábiblos (from the Koine Greek meaning 'four books'; Latin: Quadripartitum). The Catholic Church promoted his work, which included the only mathematically sound geocentric model of the Solar System. Unlike that of most Greek mathematicians, Ptolemy's writings (foremost the Almagest) were copied or evaluated in late antiquity and into the Middle Ages. However, it...
Enduring Legacy & Impact
The historical impact and works continue to influence the modern world.
Source: Wikipedia