The terrestrial sphere refers to definite geometrical space by the planet Ground. By extension, a globe commonly indicates a planetary Globe appearing the Earth, in other words a model of our planet on a very reduced scale.
The printer Martin Waldseemüller adapts in 1507 printing works to the needs for the manufacturers of spheres by creating the spindles. Up to that point, the spheres were always painted and single. Moreover, the charts of Waldseemüller published in Saint-Dié were the first to carry the inscription “America”.
The German Johannes Schöner publishes in 1515 a chart of the sphere on twelve spindles with a handbook of directions for use to assemble his terrestrial sphere 27 cm in diameter. The request was such as the manufacturers of spheres had evil required. In spite of the big number of spheres marketed at this period, especially in the Netherlands, there does not remain any specimen about it today. The oldest printed terrestrial spheres arrived to us are the productions of Dutch Gemma Frisius (about 1536). Gerardus Mercator worked in particular with the engraving of the spheres in 1536 and 1537. This last will be put then on its account by in particular producing a sphere 41 cm in diameter.
The school of Amsterdam essaime in Europe at the time of the second part of the XVIIe century. In England, it is Joseph Moxon, formed in Amsterdam at Blaeuw, which produces in the middle of the century of the spheres of five dimensions. In Germany, let us quote Georg Christoph Eimmart (1638-1705).
In fact however Italy shelters the most prestigious manufacturer of spheres of the century: Vincenzo Coronelli . Coronelli produces the most spectacular spheres of the history: the Earths of Marly. Offered to Louis XIV in 1683, this pair of spheres terrestrial and celestial measure 3,87 meters in diameter without furniture. By adding this last, the unit culminates with eight meters height for nearly 5 meters in diameter. The Earths of Marly, sometimes also named Earths of Coronelli, are not the only products by the Italian cartographer. One will thus quote for the example the terrestrial sphere 108 cm in diameter decorating the Bibliothèque Holy-Genevieve in Paris. There exist several specimens of this type of spheres, called the “110 of Coronelli”.
The Netherlands partly find their dynamism at the beginning of the century under the impulse of Gerald and Leonard Valk who produce between 1701 and 1726 seven pairs of terrestrial and celestial spheres of 7,75 cm to 62 cm in diameter.
Germany produces an astonishing sphere and which will make date: the dumb sphere. Signed by Franz Ludwig Güssefeld, this sphere 10,3 cm in diameter does not comprise any legend. It had a teaching use, in particular to question the pupils.
In France, Guillaume Delisle (1675-1726), former student of Jean-Dominique Cassini, signed a terrestrial sphere 31 cm in diameter about 1700. Didier Robert de Vaugondy (1723-1786) carries out its first terrestrial sphere in 1745. It receives in 1751 a royal order bound for the marine with spheres of 45,5 cm. These spheres knew several republications (1764 and 1773). Concerning the updates related to the new discoveries, the manufacturers of spheres ensure since the origin a form of after-sales service by providing to their customers elements of charts to be stuck on the sphere.
On the other side of the channel, the French Charles François Delamarche (1740-1817) dominates the market, in particular with his spheres 32,5 cm in diameter. Delamarche had bought the data base of Robert de Vaugondy and exploited this documentation. It was the starting point of a dynasty of manufacturers of spheres of three generations.
Among the manufacturers of French spheres of the beginning of the XXe century, let us quote Girard & Barrère and J. Forest. This last in particular provided the French schools but also proposed with its catalog a sphere lighter. This type of sphere imagination was also declined in versions sphere-bar for example.
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