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Mapping Ancient Athens is a project by a Greek non-profit Dipylon, launched in 2021, that aims to map and provide an interactive digital portal to explore the archaeological remains and historical data from more than 1500 rescue excavations conducted across Athens over the past 160 years. The project created a searchable map interface that ...
Santucci's armillary sphere is a Ptolemaic armillary sphere at the Museo Galileo in Florence, the largest existing in the world. [ 1 ] Begun on March 4, 1588, and completed on May 6, 1593, this large armillary sphere was built under the supervision of Antonio Santucci at the request of Ferdinand I de' Medici .
Jost Bürgi and Antonius Eisenhoit: Armillary sphere with astronomical clock, made in 1585 in Kassel, now at Nordiska Museet in Stockholm. An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (on the celestial sphere), consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of celestial ...
The Jagiellonian globe, also known as the Globus Jagellonicus, is a mechanical armillary sphere made in France before 1510. It is an astronomical instrument and a universal clock tracking both local solar time and sidereal time. The central brass sphere is engraved with a map of Earth and contains the clock mechanism.
The Celestial Sphere (also known as the Armillary Sphere) in the Ariana Park of the Palais des Nations is the best-known of these. The huge—over four-meter-diameter— Celestial Sphere is the chef d'oeuvre of the American sculptor Paul Manship (1885–1966).
A volvelle from a sixteenth-century edition of Sacrobosco's De Sphaera. De sphaera mundi (Latin title meaning On the Sphere of the World, sometimes rendered The Sphere of the Cosmos; the Latin title is also given as 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 (John of Holywood) c ...
An armillary sphere in a painting by Sandro Botticelli, c. 1480. Historian Oscar G. Darlington asserts that Gerbert's division by 60 degrees instead of 360 allowed the lateral lines of his sphere to equal to six degrees. [23] By this account, the polar circle on Gerbert's sphere was located at 54 degrees, several degrees off from the actual 66 ...
Map of the Themistoclean Wall with the later Diateichisma. The Themistoclean Wall (Greek: Θεμιστόκλειον τείχος), [1] named after the Athenian statesman Themistocles, was built in Athens, Greece during the 5th century BC as a result of the Persian Wars and in the hopes of defending against further invasion.