Peter Apian Collection

Diagram showing Geocentric system of universe, 1539. Artist: Petrus Apianus
Diagram showing Geocentric system of universe, 1539. Geocentric (earth-centred) system of universe showing Aristotles 4 elements surrounded by sphere of fixed stars, spheres of planets

Telling time at night using a nocturnal, 1539. The hour is obtained by measuring the angular position of the imaginary line joining the pointers in the constellation of the Plough to the Pole Star

Measuring the altitude of the Sun, 1539. From Cosmographia by Peter Apian. (Antwerp, 1539)

Reiner Gemma Frisius, Dutch astronomer, geographer, cartographer and mathematician, 1539. Gemma Frisius (1508-1555) holding an adjustable ring dial for determining the altitude of the Sun for

Using astrolabes to calculate the height of a steeple, 1539. Artist: Petrus Apianus
Using astrolabes to calculate the height of a steeple, 1539. From Cosmographia, Peter Apian, Antwerp, 1539

Title page of Quadrans Apiani by German mathematician and astronomer Peter Apian, 1532. The illustration shows his recently invented quadrant

Title page of Isagoge in Typum Cosmographicum seu Mappam Mundi by Peter Apian, 1523. The page is illustrated with a map, centred on the Mediterranean, showing only three continents, Europe

Peter Apian (1495-1552), German geographer, mathematician and astronomer. Apian established his reputation by issuing a world map in 1520, and the publication, in 1524

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