Gerardus Mercator

The Most Accurate Instruments of Gemma Frisius

The Most Accurate Instruments of Gemma Frisius

On December 9, 1508, physician, mathematician, cartographer, philosopher, and instrument maker Gemma Frisius was born. He created important globes, improved the mathematical instruments of his day and applied mathematics in new ways to surveying and navigation. Gemma Frisius – Youth and Education Gemma Frisius was born Jemma Reinierzoon in Dokkum, Friesland, a coastal province in northern Netherlands, of poor parents who died when he was young. His nom de plume Gemma Frisius is a…
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Gerardus Mercator – The Man who Mapped the Planet

Gerardus Mercator – The Man who Mapped the Planet

On December 2, 1594, German cartographer, philosopher and mathematician Gerardus Mercator passed away. He is best known for his work in cartography, particular the world map of 1569 based on a new projection which represented sailing courses of constant bearing as straight lines. He was the first to use the term Atlas for a collection of maps. “Since my youth geography has been for me the primary object of study. When I…
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Abraham Ortelius and the Theatrum Orbis Terrarum

Abraham Ortelius and the Theatrum Orbis Terrarum

On May 20, 1570, Belgian cartographer and geographer Abraham Ortelius published the first modern atlas, the Theatrum Orbis Terrarum, in Antwerp. It consisted of a collection of uniform map sheets and sustaining text bound to form a book for which copper printing plates were specifically engraved. Abraham Ortelius – Early Years Abraham Ortelius was born in Antwerp, but grew up with his uncle after his father passed away at young age. In…
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John Dee and his World of Science and Magic

John Dee and his World of Science and Magic

On July 13, 1527, Welsh mathematician, astronomer, astrologer, occultist, navigator, imperialist and consultant to Queen Elizabeth I, John Dee was born. He is considered one of the most learned men of his age. Besides being an ardent promoter of mathematics and a respected astronomer, in his later years he immersed himself in the worlds of magic, astrology and Hermetic philosophy. One of his aims was attempting to commune with angels in order to…
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