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sábado, 17 de dezembro de 2011

Carta portulana de Pedro Reinel

Pedro Reinel
foi um cartografo português autor da mais antiga carta de marear portuguesa assinada cerca de 1485 Trata-se de um portulano representando a Europa Ocidental e parte de África, que reflecte as explorações efectuadas pelo navegador ,Diogo Cão ao longo da costa africana.

Estes primitivos mapas não dispunham de um sistema de coordenadas, mas sim de linhas de rumo a partir de uma rosa dos ventos principal,que se entre cruzavam com outras linhas que partiam de rosas acessórias, dispostas ao redor da primeira. Este tipo de traçado permitia calcular os pontos de acerto de rota de navegação com o simples auxílio da bússola.

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