The evaluation of columbus’ ‘India’ project by Portuguese and Spanish cosmographers in the light of the geographical science of the period

  title={The evaluation of columbus’ ‘India’ project by Portuguese and Spanish cosmographers in the light of the geographical science of the period},
  author={W. G. L. Randles},
  journal={Imago Mundi},
... standosi [Colombo] in Portogallo comincio a congietturare che, siccome quei Portoghesi camminavano tanto lontano al mezzo di, medisimamente si potrebbe camminare alla volta dell' Occidente, e che di ragione si potrebbe trovare terra in quel cammino'. Fernando Colombo, Le Historie della Vita e deifatti di Cristoforo Colombo, Venice, 1571 (ed. Rinaldo Caddeo, Milan, 1930) I, Chap. V, p. 39. 'While in Portugal, it began to occur to Columbus that, just as the Portuguese were sailing so far to… 

Figures from this paper

New controversies on Columbus' “cosmographic” ideas

On the basis of modern works of a Spanish paleographer, a North American geographer and, a historian-sailor, also North American, respectively, we have reexamined some controversial aspects of the

Linking Seas and Lands in Medieval Geographic Thinking during the Crusades and the Discovery of the Atlantic World

In keeping with the two-fold approach of this volume, this paper presents a pair of case studies that elaborate on the interplay between land and sea in the Middle Ages. The first case study focuses

The Mapping of Africa on the Nautical Charts of the Age of Discovery

The shape of Africa on Iberian nautical charts of the late-fifteenth and early-sixteenth century is surprisingly mature. The portrayal of the outline of Africa on the Cantino planisphere of 1502 is

The Ethiopian Age of Exploration: Prester John's Discovery of Europe, 1306–1458

This article maps a complex network of exchange between Ethiopians and Europeans in the early modern period. Through a combination of disparate sources such as cartographical treatises, chronicles,

The tracts on the 'Sphere' : knowledge restructured over a network

The essay focuses on the early modern tradition of commentaries on the late Medieval work of Johannes de Sacrobosco, Tractatus de sphaera. Arguing that a new knowledge system founded on the

The Globe of the Salvator Mundi between Cosmography and Theology

The influence that the theological topic of salvation may have had on the artistic appropriation of cosmographical ideas and their adaption in depictions of the Salvator Mundi’s globe is discussed.

Traveling Around the Empire: Iberian Voyages, the Sphere, and the Atlantic Origins of the Scientific Revolution

Este articulo busca iluminar los vinculos de la geografia esferica, el Imperio Catolico y los origenes Atlanticos de la revolucion cientifica. Por decirlo brevemente, la teoria de la esfericidad de

The state of european science and technology in the late middle ages

The great European expansion of the Age of geographical discoveries was the final outcome of an economic, technical and scientific development, begun centuries before.The author briefly examines the

The African Paradise of Cardinal Carvajal: New Light on the "Kunstmann II Map," 1502-1506

Le symbole du paradis que l’on voit sur la carte geographique du monde «Kunstmann II» (1502–1506) offre a l’historien un point de depart remarquable pour l’exploration des idees europeennes sur un

Campanus y la Nueva España

espanolEn 1557, Fray Alonso de la Veracruz, titular de la primera catedra de Teologia de la Universidad de Mexico, escribe su Physica Speculatio, la cual publica junto con su propia transcripcion del



The Authorship of the Liber de crepusculis, an Eleventh-Century Work on Atmospheric Refraction

HIS ARTICLE AIMS to prove that the Liber de crepusculis, which has always been attributed to Ibn al-Haytham (Alhazen, d. c. 1039) since it was first published in 1542, is in fact the work of the

The marriage of Philology and Mercury

Part of a detailed compendium of late-Roman learning in each of the seven liberal arts, set within an amusing mythological-allegorical tale of courtship and marriage among the pagan gods. The text

Esmeraldo de situ orbis

"Edicao comemorativa da descoberta da America por Christovao Colombo no seu quarto centenario sob a direccao de Raphael Eduardo de Azevedo Basto, Conservador do Real Archivo da Torre do Tombo, membro