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Manifiesto de la canal que media entre la Ysla Sisarga y la costa, su dimensión, sonda y bajos /

description

Summary

Depths shown by soundings.

Pen-and-ink, pencil, and watercolors.

Mounted on cloth backing.

LC Luso-Hispanic World, 785

Available also through the Library of Congress Web site as a raster image.

Includes notes and index.

Maggs number annotated in pencil in lower right margin: 303.

Vault

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.

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sisargas islands spain maps manuscript manuscript maps spain sisargas islands castilian spanish manifiesto media entre media entre ysla sisarga ysla sisarga y costa dimensión su dimensión sonda bajos 1700 age of discovery age of discovery maps maps early works to 1800 cultural landscapes geography and map division map sonda y bajos ultra high resolution high resolution antique maps
date_range

Date

01/01/1700
collections

in collections

XVII Century Maps

Birth of modern maps.
create

Source

Library of Congress
link

Link

http://www.loc.gov/
copyright

Copyright info

Public Domain

label_outline Explore Sonda, Bajos, Ysla

Topics

sisargas islands spain maps manuscript manuscript maps spain sisargas islands castilian spanish manifiesto media entre media entre ysla sisarga ysla sisarga y costa dimensión su dimensión sonda bajos 1700 age of discovery age of discovery maps maps early works to 1800 cultural landscapes geography and map division map sonda y bajos ultra high resolution high resolution antique maps