The Horizons of Christopher Columbus: Using the Heavens to Map America - Couverture souple

Molander, Arne

 
9781105863356: The Horizons of Christopher Columbus: Using the Heavens to Map America
Couverture souple
ISBN 10 : 1105863352 ISBN 13 : 9781105863356
Editeur : Lulu.com, 2012

Synopsis

The horizons were of fundamental importance to Columbus. The western horizon was the focus of his lifelong quest for undiscovered territory. He used the stars grazing his northern horizon as his guides for sailing constant latitudes, and the lunar-planetary conjunctions (LPCs) at his eastern and western horizons to measure his longitudes. Most 15th Century oceanic sailors knew how to sail constant latitudes guided by the stars, but few, other than Columbus, knew how to use the heavens to measure longitude. His innovative navigation method measured longitudes by comparing measurements of LPCs at his eastern and western horizons using celestial data tabulated in his Ephemerides. Major findings include: Columbus used celestial events, he served on a 1477 voyage to Nova Scotia, comprehensive evidence reveals his 1492 landfall was at Egg Island, Amerigo Vespucci beat Ponce de Leon to Florida by a dozen years, and Columbus may have facilitated a deliberate sinking of the Santa Maria.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

The horizons were of fundamental importance to Columbus. The western horizon was the focus of his lifelong quest for undiscovered territory. He used the stars grazing his northern horizon as his guides for sailing constant latitudes, and the lunar-planetary conjunctions (Lpcs) at his eastern and western horizons to measure his longitudes. Most 15th Century oceanic sailors knew how to sail constant latitudes guided by the stars, but few, other than Columbus, knew how to use the heavens to measure longitude. His innovative navigation method measured longitudes by comparing measurements of Lpcs at his eastern and western horizons using celestial data tabulated in his Ephemerides. Major findings include: Columbus used celestial events, he served on a 1477 voyage to Nova Scotia, comprehensive evidence reveals his 1492 landfall was at Egg Island, Amerigo Vespucci beat Ponce de Leon to Florida by a dozen years, and Columbus may have facilitated a deliberate sinking of the Santa Maria.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
Lulu.com
Date d'édition
2012
Langue
anglais
ISBN 10 
1105863352
ISBN 13 
9781105863356
Reliure
Broché
Nombre de pages
256
Coordonnées du fabricant
non disponible
Personne responsable
HACHETTE LIVRE SA
https://www.hachette.fr/

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