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Johannes Müller von Königsberg (6 June 1436 – 6 July 1476 [1]), better known as Regiomontanus (/ ˌ r iː dʒ i oʊ m ɒ n ˈ t eɪ n ə s /), was a mathematician, astrologer and astronomer of the German Renaissance, active in Vienna, Buda and Nuremberg.
Regiomontanus or Johann Müller was a German scholar who made important contributions to trigonometry and astronomy. Regiomontanus was born Johann Müller of Königsberg. First let us note that the town of Königsberg near which he was born was not the more famous one in East Prussia.
His own contributions to the subject range from the formalization of plane and spherical trigonometry in De triangulis omnimodis (1464; “On Triangles of All Kinds”) to his discovery of a Greek manuscript (incomplete) of Arithmetica, the great work of Diophantus of Alexandria (fl. c. ad 250).
Johann Müller (Regiomontanus) published valuable astronomical ephemerides and mathematical texts and devised new instruments and methods of observation. He was to 15th‐century astronomy as Nicolaus Copernicus and Tycho Brahe were to 16th‐century astronomy.
Johannes Müller was a German physiologist and comparative anatomist, one of the great natural philosophers of the 19th century. His major work was Handbuch der Physiologie des Menschen für Vorlesungen, 2 vol. (1834–40; Elements of Physiology).
Johann Müller Regiomontanus (1436 – 1476) was a German mathematician and astronomer. He made great advances in both fields, including creating detailed astronomical tables and publishing multiple textbooks.
Between 1828 and 1838 Johannes Muller (1801-1858) published his important neurophysiological and anatomical investigations (primary fibres, cranial nerves, reflex movement, experimental proof of Charles Bell's law).
