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...

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) was...

1180–84 Tractatus de Sphaera, or De sphaera mundi, the basic elements of astronomy written by Johannes de Sacrobosco c. 1230 Tractatus de superstitionibus...

relied on introductions to the Ptolemaic system such as the De sphaera mundi of Johannes de Sacrobosco and the genre of textbooks known as Theorica planetarum...

corresponds to a house in the zodiac. Armillary sphere Celestial sphere De sphaera mundi Savage-Smith 1985, p. 3. Borchert, Donald M. (2006). In Encyclopedia...

been noted to be spherical. For example, Johannes de Sacrobosco (1195–1256) wrote in his De sphaera mundi (Treatise on the Sphere); That the earth, too...

French prose romance Guillaume de Lorris – First section of Romance of the Rose Johannes de Sacrobosco – De sphaera mundi Snorri Sturlusson – Heimskringla...

in 1623. In 1626, Burgersdijk was tasked with editing Johannes de Sacrobosco’s De sphaera to rid the book of its Latin. Burgersdijk participated in two...

books by the philosopher Peter Sloterdijk De sphaera mundi (The Sphere), a medieval astronomy book by Johannes de Sacrobosco The Sphere (newspaper), a British...

combinatorial concepts. He had read Clavius' comments to Sacrobosco's De sphaera mundi, and some other contemporary works. He introduced the term variationes...