Petrus Apianus, Cosmographia,1551

Petrus Apianus, Cosmographia,1551

Petrus Apianus, Cosmographia, title page, 1551.Petrus Apianus (April 16, 1495 - April 21, 1552) was a German humanist, known for his works in mathematics, astronomy and cartography. In 1524 he produced his Cosmographicus liber, a respected work on astronomy and navigation that was to see at least 30 reprints in 14 languages. In 1527 he published a variation of Pascal's triangle, and in 1534 a table of sines. In 1531, he observed a comet and discovered that a comet's tail always point away from the sun. In 1540, he printed the Astronomicum Caesareum, dedicated to Charles V who appointed him his court mathematician. He designed sundials, published manuals for astronomical instruments and crafted volvelles (Apian wheels), measuring instruments useful for calculating time and distance for astronomical and astrological applications. He died in 1552 at the age of 57.

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