Torquetum
From Inventions
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|nome= Name commonly used since the fifteenth century. | |nome= Name commonly used since the fifteenth century. | ||
| - | |descrizione= Invented in 1470 by Regiomontanus, the astronomical torquetum is an "exploded" version of the [[astrolabe]], representing the circles of the celestial sphere on different planes: the circle of the ecliptic (inclined), of the equinox (horizontal) and of the meridian (vertical). The instrument served mainly for astronomical computations (converting ecliptic into equinoctial coordinates and vice versa) but could also be used for terrestrial measurements. Undoubtedly, it was the prototype for various instruments developed for surveying and compiling corographic maps, such as the [[polymeter]], the [[ | + | |descrizione= Invented in 1470 by Regiomontanus, the astronomical torquetum is an "exploded" version of the [[astrolabe]], representing the circles of the celestial sphere on different planes: the circle of the ecliptic (inclined), of the equinox (horizontal) and of the meridian (vertical). The instrument served mainly for astronomical computations (converting ecliptic into equinoctial coordinates and vice versa) but could also be used for terrestrial measurements. Undoubtedly, it was the prototype for various instruments developed for surveying and compiling corographic maps, such as the [[polymeter]], the [[Vertical Compass |vertical compass]], the [[cosmolabe]] and the [[theodolite]]. |
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| + | http://www.21stcenturysciencetech.com/articles/fall01/Tanawa/tanawa.html (English)<br /> | ||
| + | http://employees.oneonta.edu/farberas/arth/ARTH214/Torquetum.html (English)<br /> | ||
| + | http://www.ssplprints.com/image.php?imgref=10205230 (English)<br /> | ||
| + | http://perso.numericable.fr/jlconstant/zportail/recits_de_cathy/sphere/chine3.htm (French)<br /> | ||
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|immagini= <gallery widths=230 heights=368 perrow=3> | |immagini= <gallery widths=230 heights=368 perrow=3> | ||
Current revision as of 10:52, 8 September 2010
Name commonly used since the fifteenth century.
Contents |
Inventor
Johannes Mueller, detto Regiomontano
Historic Period
1470
Description
Invented in 1470 by Regiomontanus, the astronomical torquetum is an "exploded" version of the astrolabe, representing the circles of the celestial sphere on different planes: the circle of the ecliptic (inclined), of the equinox (horizontal) and of the meridian (vertical). The instrument served mainly for astronomical computations (converting ecliptic into equinoctial coordinates and vice versa) but could also be used for terrestrial measurements. Undoubtedly, it was the prototype for various instruments developed for surveying and compiling corographic maps, such as the polymeter, the vertical compass, the cosmolabe and the theodolite.
Bibliographical Resources
Regiomontanus, Johannes. Scripta clarissimi mathematici M. Ioannis Regiomontani, De torqueto, astrolabio armillari, regula magna Ptolemaica, baculoque astronomico, et observationibus cometarum, aucta necessariis Ioannis Schoneri Carolostadii additionibus. item Ioannis de Monteregio et Bernardi Waltheri observationes motuum solis, ac stellarum tam fixarum, cumque erraticarum, item libellus Georgii Purbachii de Quadrato geometrico… Norimbergae, apud Ioannem Montanum & Ulricum Neuber, 1544.
Boffito, Giuseppe. Gli strumenti della scienza e la scienza degli strumenti: con l'illustrazione della Tribuna di Galileo. Facsimili di Primo Benaglia. Firenze, Libr. internazionale Seeber, 1929.
Turner, Anthony. Early scientific instruments: Europe 1400-1800. London, Sotheby, 1987.
Kiely, Edmond R. Surveying instruments: their history. Columbus, Carben surveying reprints, 1979.
Links (External)
http://www.21stcenturysciencetech.com/articles/fall01/Tanawa/tanawa.html (English)
http://employees.oneonta.edu/farberas/arth/ARTH214/Torquetum.html (English)
http://www.ssplprints.com/image.php?imgref=10205230 (English)
http://perso.numericable.fr/jlconstant/zportail/recits_de_cathy/sphere/chine3.htm (French)
Images
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 201. |
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 224. |
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 225. |
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 226. |
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 228. |
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 229. |
 Egnazio Danti. Primo volume dell'vso et fabbrica dell'astrolabio. Firenze, 1578, p. 230. |
 Giovanni Paolo Gallucci. Della fabrica et uso di diuersi stromenti di astronomia et cosmografia. Venezia, 1598, p. 198v. |
 Gregor Reisch. Margarita philosophica noua. Ex Argentorato veteri, 1515. |
Author of the entry: Filippo Camerota
