Frisius, Gemma. [Reinerszoon, Jemme.]
9 december 1508 - 25 maj 1555.
Gemma Frisius was a physician, mathematician, cartographer, philosopher, and instrument maker. He created important globes, improved the mathematical instruments of his day and applied mathematics in new ways to surveying and navigation.
Frisius was born in Dokkum, Friesland (present-day Netherlands) of poor parents, who died when he was young. He moved to Groningen and studied at the University in Leuven beginning in 1525. He received the degree of MD in 1536 and remained on the faculty of medicine in Leuven for the rest of his life. His oldest son, Cornelius Gemma, edited a posthumous volume of his work and continued to work with Ptolemaic astrological models.
While still a student, Frisius set up a workshop to produce globes and mathematical instruments. He became noted for the quality and accuracy of his instruments, which were praised by Tycho Brahe, among others. In 1533, he described for the first time the method of triangulation still used today in surveying. Twenty years later, he was the first...
Bland arbeten.
(Cosmographia (1529) von Petrus Apianus, annotated by Gemma Frisius)
De principiis astronomiae et cosmographiae (1530)
De usu globi (1530)
Libellus de locorum describendorum ratione (1533)
Arithmeticae practicae methodus facilis (1540)
De annuli astronomici usu (1540)
De radio astronomico et geometrico (1545)
De astrolabio catholico (1556)
Född i Nijmegen 1509, död i Antwerpen 1591.
Jode, (Judaeis, Judaeus) Gerard de (1509-1591). Born in Nijmegen, died at Antwerp.
Engraver, printer, printseller, publisher, cartographer.
Bland arbeten.
Ortelius' World 1564
Gastaldi's World 1555
Musinus' Europe 1560
Seco's Portugal 1563
Speculum Orbis Terrarum 1578, reissued by Cornelius de Jode 1593.
Tooley 1979
Sonson till Nicolas Sanson (se denne).
Amiral Häggs flaggkarta. - Stockholm 1888.
Styvmorsviol, Viola tricolor - Lindman, C. A. M, Bilder ur Nordens Flora 1917-26.
