(Gemma-Frisius) returned 4 hits

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1
Author: Regnier Gemma-Frisius (1508-1555)
Theoretical description of how longitude may be determined using difference of times by a clock and the associated observed change in star positions (not implemented)
Category: Statistics & Graphics
2
Author: Regnier Gemma-Frisius (1508-1555)
Description of how to determine mapping locations by triangulation, from similar triangles, and with use of angles w.r.t meridians
Category: Statistics & Graphics
3
Author: Regnier Gemma-Frisius (1508-1555)
The first published illustration of a camera obscura, used to record an eclipse of the sun, on January 24, 1544.
Category: Technology
4
Author: Willebrord van Roijen Snell (1580-1626)
First use of Frisius' method of trigonometric triangulation to produce locations of major cities in Holland; foundation of geodesy
Category: Statistics & Graphics