Tractatus de sphaera, Textus de sphaera, or simply De sphaera) is a medieval introduction to the basic elements of astronomy written by Johannes de Sacrobosco...
7 KB (766 words) - 06:24, 20 August 2024
Tractatus is Latin for "treatise". It may refer to: Tractatus de amore by Andreas Capellanus Tractatus Astrologico Magicus, also known as the Aldaraia...
2 KB (228 words) - 20:14, 17 April 2024
was named in his memory. About 1230, his best-known work, Tractatus de Sphaera / De Sphaera Mundi (Treatise on the Sphere / On the Sphere of the World)...
15 KB (1,587 words) - 08:02, 5 September 2024
most regarded for his work on Tractatus de Sphaera, which is usually published with other texts on Tractatus de Sphaera from various authors. This opens...
6 KB (715 words) - 13:11, 27 March 2024
a picture of a small paper boat in an edition of Tractatus de sphaera mundi from 1490 by Johannes de Sacrobosco. However it is very likely that paper...
6 KB (598 words) - 21:51, 11 September 2024
wrote an authoritative and influential mediaeval astronomy text, the Tractatus de Sphaera; the Algorismus, which introduced calculations with Hindu-Arabic...
28 KB (3,612 words) - 13:02, 14 July 2024
small paper boat in the 1498 French edition of Johannes de Sacrobosco's Tractatus de Sphaera Mundi. There is also evidence of a cut and folded paper box...
19 KB (2,202 words) - 02:41, 16 August 2024
Medieval university (category CS1 German-language sources (de))
Gilbert de la Porrée's De sex principiis and Summulae Logicales by Petrus Hispanus (later Pope John XXI). The standard work of astronomy was Tractatus de sphaera...
32 KB (3,659 words) - 01:07, 19 July 2024
Libellus de sole, originally by Marsilius Ficinus. He then made two different commented reprints of the Tractatus de sphaera by Johannes de Sacrobosco...
7 KB (938 words) - 06:21, 25 February 2024
Sphere with the theory of the Sun and the Moon), (1537). From Tractatus de Sphæra by Johannes de Sacrobosco, Theoricae novæ planetarum by Georg Purbach and...
17 KB (1,943 words) - 00:04, 9 August 2024