An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (in the celestial sphere), consisting of a spherical framework of rings, centred on Earth, that represent lines of celestial longitude and latitude and other astronomically important features such as the ecliptic. As such, it diffe...
Found on
http://en.wikipedia.org/wiki/Armillary_sphere
early astronomical device for representing the great circles of the heavens, including in the most elaborate instruments the horizon, meridian, ... [3 related articles]
Found on
http://www.britannica.com/eb/a-z/a/102
An ancient Greek, Arabic, and medieval device used to show and observe the movements of astronomical bodies. The celestial sphere is modeled by a skeletal framework of rings or armillaries (from the Latin armilla meaning `ring”), each representing an important circle, such as the ecliptic or celesti...
Found on
http://www.daviddarling.info/encyclopedia/A/armillary_sphere.html
The Armillary Sphere is an ancient astronomical instrument consisting of an arrangement of rings, all circles of one sphere, intended to represent the principal circles of the celestial globe, the rings standing for the meridian of the station, the ecliptic, the tropics, the arctic and antarctic circles, etc, in their relative positions. Its main u...
Found on
http://www.probertencyclopaedia.com/browse/GA.HTM
[
n] - model of the celestial sphere
Found on
http://www.webdictionary.co.uk/definition.php?query=armillary%20sphere
noun a celestial globe consisting of metal hoops; used by early astronomers to determine the positions of stars
Found on
https://www.encyclo.co.uk/local/20974
an ancient instrument consisting of an arrangement of rings, all of which are circles of the same sphere, used to show the relative positions of the celestial equator, ecliptic, and other circles on the celestial sphere.
Found on
https://www.infoplease.com/dictionary/armillary-sphere
No exact match found.
