1774-1836.
Appointed engineer at the Survey Office in 1801, but was not eligible for salary until a permanent position became vacant. In 1809 was commissioned lieutenant at the marine measurement corps and made supervisor at the Sea Charts Office. Known for his skill and great modesty.
Sveriges sjökartor – A. Hedin.
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)
1724-1804.
Dansk ämbetsman. Född och död i Köpenhamn. Började 1738 studera och tog en teologisk examen 1743. Efter flera års studieresor i Tyskland och Holland blev han 1754 anställd som matematiker i marinens tjänst. 1760 fick han titeln professor, och 1763 blev han navigationsdirektör. Medlem av olika danska lärda sällskap. Var en produktiv författare inom sitt fackområde, och utarbetade flera sjökort, speciellt över Kattegatt och danska farvatten.
Ehrencron.
Karta öfver Stockholm. - 1904.
Grafen von Biron - Tyskland ca 1800.
JACOBSZ, THEUNIS (eller ANTHEUNIS).
Biografiska uppgifter:Ca. 1607-50. Född och död i Amsterdam.
c. 1606-50
JACOB JACOB5Z (LOOTSMAN) (son) d. 1679
Holländsk kartograf. Han var boktryckare och bokhandlare. 1648 gav han ut 't'Nieuw groot Straets-boeck, inhoudende d'Middelantse Zee'. Efter sin död gav sonen Jacob Theunisz (se denne) ut 't'Nieuwe en vergroote Zeeboeck, dat is des Piloots ofte Lootsmans Zee-Spiegel, inhoud de Zee-kusten vande Noordsche, Oosterzee ende Westersche Schipvaert' (1653). Båda dessa atlaser kom senare i flera utgåvor.
Anthonie Jacobsz founded a printing and publishing business in Amsterdam in which he specialized in the production of pilot books and sea atlases. As he died at a comparatively early age most of the numerous editions of his works appeared after his death published by his sons, Jacob and Caspar, who took the name 'Lootsman' (sea pilot) to distinguish them from another printer of the name Jacobsz.
Following Blaeu and Colom, Anthonie Jacobsz was the most important compiler of sea charts in Amsterdam in the first half of the seventeenth century. In his new ZeeSpiegel issued in 1643 he increased the number of charts normally included in these books and enlarged them to folio size, which evidently proved popular. Editions in many forms appeared until 1715 and they were copied or reprinted by Pieter Goos, Hendrick Doncker and Jan Jansson, sometimes in competition with each other but usually in cooperation with the Lootsman brothers.
Bland arbeten:
t'Nieuw groot Straets-boeck, inhoudende d'Middelantse Zee.
t'Nieuwe en vergroote Zeeboeck, dat is des Piloots ofte Lootsmans Zee-Spiegel, inhoud de Zee-kusten vande Noordsche, Oosterzee ende Westersche Schipvaert.
(Kleerkooper. - Phillips.)
