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First edition. Glued binding. Paper over boards. [8], 264 p. Illustrations. Notes. Index. In May, 1539, a young, German mathematician named Georg Joachim Rheticus traveled hundreds of miles across Europe in the hopes of meeting and spending a few days with the legendary astronomer, Nicolas Copernicus, in Frombork, Poland. Two and a half years later, Rheticus was still there, fascinated by what he was discovering, but largely engaged in trying to convince Copernicus to publish his masterwork--"De revolutionibus" ("On the Revolutions of the Heavens"), the first book to posit that the sun was the center of the universe. That he was finally able to do so just as Copernicus was dying became a turning point for science and civilization. That he then went on to a legendary career of his own--he founded the field of trigonometry, for example--will be one of the many surprises in this eye-opening book, which will restore Rheticus to his rightful place in the history of science. From Wikipedia: "Georg Joachim de Porris, also known as Rheticus (16 February 1514 4 December 1574), was a mathematician, cartographer, navigational-instrument maker, medical practitioner, and teacher. He is perhaps best known for his trigonometric tables and as Nicolaus Copernicus's sole pupil. He facilitated the publication of his master's De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres). Rheticus was born at Feldkirch, in present-day Austria. Both his parents, Georg Iserin and Thomasina de Porris, possessed considerable wealth, his father being the town physician. However, Georg abused the trust of many of his patients, stealing belongings and money from their homes. In 1528 he was convicted and executed for his crimes, and as a result his family was stripped of their surname. The family adopted the mother's maiden name: de Porris. Later as a student in Wittenberg Georg Joachim adopted the toponym Rheticus, a form of the Latin name for his home region, Rhaetia, a Roman province that had included parts of Austria, Switzerland and Germany. In the matriculation list for the University of Leipzig his family name, de Porris, is translated into German as von Lauchen. The crater Rhaeticus is named for him. After Georg Iserin's death, Achilles Gasser took over his medical practice, helping Rheticus to continue his studies and supporting him. Rheticus studied at Feldkirch, Zürich and the University of Wittenberg, where he received his M.A. in 1536. During the Reformation the theologian and educator Philipp Melanchthon reorganized the whole educational system of the Lutheran Protestant parts of Germany, reforming and founding several new universities. In 1536 Melanchthon appointed Rheticus as professor of the lower mathematics, arithmetic and geometry, at the Wittenberg University. Two years later, Melanchthon arranged a two-year leave for Rheticus to study with noted astronomers. Leaving Wittenberg in October 1538, he first went to Nuremberg to visit the professor of mathematics at the Eigidien Oberschule Johannes Schöner. In Nuremberg he also made the acquaintance of other mathematicians such as Georg Hartmann and Thomas Venatorius as well as the printer-publisher Petreius. During his journey, probably in Nuremberg, Rheticus heard of Copernicus and decided to seek him out. From Petreius Rheticus was given works by Regiomontanus and others, intended as presents for Copernicus. He went on to Peter Apian in Ingolstadt and Joachim Camerarius in Tübingen, then to Gasser in his hometown. From Feldkirch he set out on his journey to visit Copernicus in Frombork. In May 1539, Rheticus arrived in Frombork (Frauenburg), where he spent two years with Copernicus. It is unknown whether he had prior access to Copernicus' Commentariolus, an unsigned, unpublished outline of Copernicus' revolutionary heliocentric theory that Copernicus distributed to friends and colleagues three decades before he published De revolutionibus. In September 1539, Rheticus.
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