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🔎 Paolo Toscanelli – Definition and Explanations

Introduction

Paolo dal Pozzo Toscanelli Where Paolo Tuscanylli (Florence 1397 – Florence, May 15, 1482) nicknamed Paul the physicistwas a Florentine astronomer, cartographer and physician from the XVe century.

Biography

With his friend Nicolas de Cues, Paolo Tuscanylli (Paolo dal Pozzo Toscanelli or Paolo Toscanelli (Florence 1397 – Florence, May 15, 1482)…) follow the courses of mathematician (A mathematician is in the restricted sense a researcher in mathematics, by extension all…) Prosdocimo del Beldomandi at theuniversity of padua (The University of Padua (in Italian, Università degli studi di Padova) is a…). The only proof of his knowledge math (Mathematics is a field of abstract knowledge constructed using…) is a page of measurements which appears in a manuscript of observations on comets preserved in the Library of Florence (Florence (in Italian Firenze) is a city in Italy, capital of the region of Tuscany and…). Before the discovery of this memory (Generally speaking, memory is the storage of information. It is also remembering…) in 1864 the work ofobservation (Observation is the action of attentive follow-up of phenomena, without the will to see them…) of Toscanelli on comets were totally unknown. This manuscript gives details of observations of six comets made by Toscanelli. There is also a page of measurements made to calculate the position of these comets. Recent checks show that the positions are considered very accurate for their time. The fifth comet (In astronomy, a comet is a small bright star made of ice and …) observed by Toscanelli was C/1457 A1. This comet is not mentioned in Alexandre Guy Pingré’s work “Cométographie ou Traite Historique et Théorique des Comètes” published at Paris (Paris is a French city, capital of France and the capital of the region…)in 1783.

Returned to Florence, he exercised the medicine (Medicine (from the Latin medicus, “that heals”) is the science and the…) then later became curator of the library of the scholar Niccolò Niccoli (adviser to Cosimo the Elder de’ Medici).

He helps Filippo Brunelleschi (Filippo di Ser Brunellesco Lippi or Filippo Brunelleschi, born in 1377 in Venice and died in…) for calculations of the construction of the cupola (A cupola is a hemispherical vault, with a semicircular, elliptical profile or…) of Santa Maria del Fiore (Santa Maria del Fiore is Florence’s cathedral (the Duomo).).

In 1468, he established the first gnome (A gnomon is the name of the simplest sundial: a stick planted vertically in the…) modern by making a circular opening on the dome () of the cathedral (A cathedral is, originally, a Christian church where the…) of Florence, which, giving a large and net (The term Nette is a vernacular name attributed in French to several species…) from Sun (The Sun (Sol in Latin, Helios or Ήλιος in Greek) is the star…) on the meridian line traced by a band of marble (Marble is a metamorphic rock derived from limestone, existing in a large…) from cobblestone (A cobblestone is a cubic or parallelepiped-shaped block of stone or concrete used in…)is used to him to determine the solstitial points, the variations of theecliptic (The ecliptic is the great circle on the celestial sphere representing the annual trajectory of the…)and to correct the Alphonsine Tables.

Tuscanylli’s cards

If he drew a map of the road (The word “road” derives from the Latin (via) rupta, literally “way…) of India by theAtlantic Ocean (The Atlantic Ocean is one of the five oceans of the Earth. Its area of…)which he transmitted to the King of Portugal, there is no evidence that he thus had any influence on the decision of Christopher Columbus to attempt the travel (A trip is a trip made to a more or less distant point for a personal purpose…).

Tuscanylli’s map (1468)

The map he drew up in 1468 indicates a continent (The word continent comes from the Latin continere for “to hold together”, or continens…) asian much closer to theEurope (Europe is a land region that can be considered a…) than in reality. This map that Christopher Columbus was able to hold in his hands, may have influenced him to organize his crossing of theocean (An ocean is often defined, in geography, as a vast expanse of water…) Atlantic.

On this map we see theindication (An indication (from the Latin indicare: to indicate) is advice or a recommendation, written…) of one island (An island is an area of ​​land surrounded by water, whether that water is that of a river, a…) named Antilia in the center of the ocean. More at south (South is a cardinal point, opposite to north.) appears another island whose name seems to be I.Brandaniname given in connection with the voyage of Saint Brandan.