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Nouvel atlas portatif 1790 (84255984)
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Italie : [carte d'aprés les divisions politiques]
A new map of Italy distinguishing all the sovereignties in it, whether states, kingdoms, dutchies, principalities, republicks, &c : with the post roads, and many remarks not extant in any map
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Nouvel atlas portatif destiné principalement pour l'instruction de la jeunesse d'aprés la Géographie moderne de feu l'abbé Delacroix - no-nb digibok 2013101626001-75
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Granada [Material cartográfico] - Public domain map
Plano de Granada [Material cartográfico]
Andaluzia continens Sevillam et Cordubam [Material cartográfico]
Mapa topográfico de la ciudad de Granada [Material cartográfico]
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Provincia Andalusiae [Material Cartográfico]
Salvador Andreu y Grau [Material gráfico]
GALLANÍAS, PAJARES Y HABITACIÓNES [Material gráfico]
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Summary
Márgenes graduados.
In the 17th century, maps took a huge leap forward. Mathematical and astronomical knowledge necessary to make accurate measurements had evolved. English mathematicians had perfected triangulation: navigation and surveying by right-angled triangles. Triangulation allowed navigators to set accurate courses and produced accurate land surveys. Seamen learned to correct their compasses for declination and had determined the existence of annual compass variation. Latitude determination was greatly improved with the John Davis quadrant. The measurement of distance sailed at sea was improved by another English invention, the common log. Longitudinal distance between Europe and Québec was determined by solar and lunar eclipses by the Jesuit Bressani in the 1640s and by Jean Deshayes in 1686. With accurate surveys in Europe, the grid of the modern map began to take shape.