Christopher Clavius (1538–1612)

Born 1538 CE, died 1612 CE.

Christopher Clavius, (25 March 1538 – 6 February 1612) was a Jesuit German mathematician and physicist, head of mathematicians at the Collegio Romano, and astronomer who was a member of the Vatican commission that accepted the proposed calendar invented by Aloysius Lilius, that is known as the Gregorian calendar. Clavius would later write defences and an explanation of the reformed calendar, including an emphatic acknowledgement of Lilius' work. In his last years, he was probably the most respected astronomer in Europe and his textbooks were used for astronomical education for over fifty years in and even out of Europe.

Text from the Wikipedia article Christopher_Clavius, licensed CC BY-SA 4.0.

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