|
Johannes Müller von Königsberg (6 June 1436 – 6 July 1476), today best known by the Latin epithet Regiomontanus, was a German mathematician, astronomer, astrologer, translator, instrument maker and Catholic bishop. He was born in the Franconian village of Unfinden, now part of Königsberg, Bavaria — not in the more famous East-Prussian Königsberg. He was also known as Johannes der Königsberger (Johannes of Königsberg). His writings were published under the name of ''Ioannes de Monte Regio'', a Latinized version of his name. Both names mean ''"John of King's Mountain"''. The name "Regiomontanus" was first coined by Philipp Melanchthon in 1534, fifty-eight years after Regiomontanus' death. ==Life== At eleven years of age, Regiomontanus became a student at the university in Leipzig, Saxony. In 1451 he continued his studies at Alma Mater Rudolfina, the university in Vienna, Austria. There he became a pupil and friend of Georg von Peuerbach. In 1452 he graduated with a BA and was awarded his “magister artium” (Master of Arts) at the age of 21 in 1457. It is known that he held lectures in optics and ancient literature. Regiomontanus continued to work with Peuerbach learning and extending the then known areas of astronomy, mathematics and instrument making until Peuerbach's death in 1461. In 1460 the papal legate Basilios Bessarion came to Vienna on a diplomatic mission. Being a humanist scholar and great fan of the mathematical sciences, Bessarion sought out Peuerbach's company. George of Trebizond who was Bessarion's philosophical rival had recently produced a new Latin translation of Ptolemy's Almagest from the Greek, which Bessarion, correctly, regarded as inaccurate and badly translated, so he asked Peuerbach to produce a new one. Peuerbach's Greek was not good enough to do a translation but he knew the Almagest intimately so instead he started work on a modernised, improved abridgement of the work. Bessarion also invited Peuerbach to become part of his household and to accompany him back to Italy when his work in Vienna was finished. Peuerbach accepted the invitation on the condition that Regiomontanus could also accompany them. However Peuerbach fell ill in 1461 and died only having completed the first six books of his abridgement of the Almagest. On his death bed Peuerbach made Regiomontanus promise to finish the book and publish it. In 1461 Regiomontanus left Vienna with Bessarion and spent the next four years travelling around Northern Italy as a member of Bessarion's household, looking for and copying mathematical and astronomical manuscripts for Bessarion, who possessed the largest private library in Europe at the time. Regiomontanus also made the acquaintance of the leading Italian mathematicians of the age such as Giovanni Bianchini and Paolo dal Pozzo Toscanelli who had also been friends of Peuerbach during his prolonged stay in Italy more than twenty years earlier. During his time in Italy he completed Peuerbach's Almagest abridgement, ''Epytoma in almagesti Ptolemei''. In 1464, he completed ''De Triangulis omnimodus''. ''De Triangulis'' (On Triangles) was one of the first textbooks presenting the current state of trigonometry and included lists of questions for review of individual chapters. In it he wrote: His work on arithmetic and algebra, ''Algorithmus Demonstratus'', was among the first containing symbolic algebra. In 1465, he built a portable sundial for Pope Paul II. In ''Epytoma in almagesti Ptolemei'', he critiqued the translation of ''Almagest'' by George of Trebizond, pointing out inaccuracies. Later Nicolaus Copernicus would refer to this book as an influence on his own work. He went to work for János Vitéz, archbishop of Esztergom. There he calculated extensive astronomical tables and built astronomical instruments. Later he went to Buda, and the court of Matthias Corvinus of Hungary, for whom he built an astrolabe, and where he collated Greek manuscripts for a handsome salary. In 1471 Regiomontanus moved to the Free City of Nuremberg, in Franconia, then one of the Empire's important seats of learning, publication, commerce and art, where he worked with the humanist and merchant Bernhard Walther. Here he founded the world's first scientific printing press, and in 1472 he published the first printed astronomical textbook, the ''Theoricae novae Planetarum'' of his teacher Georg von Peurbach. In 1475 he was called to Rome to work with Pope Sixtus IV on calendar reform. Regiomontanus died of unknown causes in Rome, July 6, 1476, a month after his fortieth birthday. According to a rumor repeated by Gassendi in his Regiomontanus biography, he was assassinated by relatives of George of Trebizond whom he had criticized in his writings. More likely he died in an epidemic raging in Rome at the time. A prolific author, Regiomontanus was internationally famous in his lifetime. Despite having completed only a quarter of what he had intended to write, he left a substantial body of work. Nicolaus Copernicus' teacher, Domenico Maria Novara da Ferrara, referred to Regiomontanus as having been his own teacher. There is speculation that Regiomontanus had arrived at a theory of heliocentrism before he died; a manuscript shows particular attention to the heliocentric theory of the Pythagorean Aristarchus, mention was also given to the motion of the earth in a letter to a friend.〔Arthur Koestler, ''The Sleepwalkers'', Penguin Books, 1959, p. 212.〕 In 1561, Daniel Santbech compiled a collected edition of the works of Regiomontanus, ''De triangulis planis et sphaericis libri quinque'' (first published in 1533) and ''Compositio tabularum sinum recto'', as well as Santbech's own ''Problematum astronomicorum et geometricorum sectiones septem''. It was published in Basel by Henrich Petri and Petrus Perna. The crater Regiomontanus on the Moon is named after him. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Regiomontanus」の詳細全文を読む スポンサード リンク
|