Clavius and jesus

Clavius, Christoph

(b. Bamberg, Germany, 25 March 1538;

d. Rome, Italy, 6 February 1612), astronomy, cosmology, mathematics, education. For the original article on Clavius see DSB, vol. 3.

Clavius offered the last serious defense of the ancient Ptolemaic cosmology and published one of the earliest critiques of Copernican theory. Along with his students, he authenticated Galileo’s early telescopic discoveries and prominently recognized their epochal significance in his widely used textbook of elementary astronomy. Clavius attained international estee m for his exposition of Euclid'sElements and spent much of his career establishing an important place for mathematical studies in Jesuit schools. He was also a member of the papal commission that planned and executed the Gregorian calendar reform of 1582 and through subsequent publications became the principal expositor and defender of the Gregorian calendar.

Biographical Background . Other than his birth date in Bamberg, Clavius’s origins are unknown, including his original family name, which might have been Clau, Schlü

Quick Info

Born
25 March 1538
Bamberg (now in Germany)
Died
2 February 1612
Rome (now in Italy)

Summary
Christopher Clavius was a German Jesuit astronomer who helped Pope Gregory XIII to introduce what is now called the Gregorian calendar.

Biography

Christopher Clavius was born in a German region and must have had a German name before adopting the Latin 'Clavius'. Several guesses such as 'Clau' or 'Klau', or even 'Schlüssel' which means 'key' so might have led to him taking the Latin 'Clavius' which also means 'key', have been made but none have ever been substantiated with any evidence. Despite being born at a time when the Protestant revolution was spreading in Germany, the region of Franconia where he was born was virtually unaffected and remained solidly Roman Catholic. He entered the Jesuit Order (the Society of Jesus) in 1555, being admitted in Rome, and received his education within the Order. He was sent to the University of Coimbra in Portugal in 1556 to study at the Jesuit College that had been founded there.

Mathematics had always been a topi
Christopher Clavius

Christopher Clavius (1537-1612)

Nothing is known of Clavius's early life, except that he was born in Bamberg in the German region. We do not even know his German name, although various possibilities have been suggested. Clavius grew up during the initial stages of the Protestant Reformation in a region of Germany, Franconia, that remained Catholic. Three years after he was born, Ignatius de Loyola founded the Jesuit order with ten initial members; its membership had reached about a thousand by 1555, when Clavius was admitted to the order in Rome, a month before his seventeenth birthday. In 1556 he was sent to the university of Coimbra in Portugal, where the Jesuits had founded their own college. Here he took the normal university curriculum but excelled in the mathematical subjects, and his observation of the total solar eclipse of 1560 made him decide that astronomy would be his life's work. In 1560 he returned to Rome and began his study of theology at the Collegio Romano. He was ordained in 1564 while still pursuing his theological studies. In 157

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