Tadeáš Hájek of Hájek (1525 to 1600), also known by the Latinized names Thaddaeus Hagecius ab Hayek and Thaddeus Nemicus, was a Czech naturalist and astronomer. He was personal medical doctor to the Holy Roman Emperor Rudolf II and an astronomer in the Kingdom of Bohemia. Born in Prague, he studied medicine and astronomy in Vienna, graduated in 1550, studied medicine in Bologna in 1554 and heard Girolamo Cardano lecture in Milan, then became professor of mathematics at Charles University in Prague in 1555. He published Aphorismi Metoposcopici in 1561, triangulated the area around Prague and co-authored a map of it in 1563, and from 1566 to 1570 served as an army doctor during the war with the Ottoman Empire. In 1572 he published his studies of a supernova in the constellation Cassiopeia. He was ennobled in 1554 and later made a knight of the Holy Roman Empire.
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Source Tadeáš Hájek (Wikipedia)Lead, nationalityQuote, Lead, nationality
was a Czech naturalist and astronomer
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1. Tadeáš Hájek (Wikipedia)
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1 December 1525
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was a Czech naturalist and astronomer
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He was a personal medical doctor of the Holy Roman Emperor Rudolf II
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was a Czech naturalist and astronomer
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he became a professor of mathematics at the Charles University of Prague in 1555
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