Gemma Frisius, Dutch mathematician and cartographer (died 1555)

Gemma Frisius

Frisian physician, mathematician and cartographer (1508–1555)

Gemma Frisius was a Dutch 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. Gemma's rings, an astronomical…