armillary sphere

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ar·mil·lar·y sphere

 (är′mə-lĕr′ē, är-mĭl′ə-rē)
An old astronomical model with solid, usually metal rings, all great circles of a single sphere, used to display relationships among the principal celestial circles.

[Translation of French sphère armillaire, from Latin armilla, bracelet, from armus, shoulder; see ar- in Indo-European roots.]

armillary sphere

(Astronomy) a model of the celestial sphere consisting of rings representing the relative positions of the celestial equator, ecliptic, etc, used by early astronomers for determining the positions of stars

ar′millary sphere′

an ancient astronomical instrument consisting of an arrangement of metal rings used to show the relative positions of the celestial equator and other circles on the celestial sphere.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.armillary sphere - a celestial globe consisting of metal hoopsarmillary sphere - a celestial globe consisting of metal hoops; used by early astronomers to determine the positions of stars
celestial globe - a globe that is a spherical model of the heavens
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References in periodicals archive ?
Nearby, an altazimuth--used to determine celestial angles--sits next to an armillary sphere and a detailed celestial globe.
In the case of the armillary sphere, used for measuring the longitude of any star, he notes that we must first have the coordinate of a reference star.
New additions to the format were: Rainer's Sun Corner: The sunny day provided an excellent opportunity to show off Rainer Jakob's 'Sun Corner' which included seven beautiful sundials, an armillary sphere and an analemmatic sundial--six were built by Rainer himself.
Among the sculptures are an armillary sphere, used to pinpoint the position of heavenly bodies, and a sextant, used to measure distances between stars and a celestial globe.
This coming June, in further celebration of the magic of light, diffraction gratings will be installed to radiate rainbows of color throughout the glass cube, while an updated armillary sphere of concentric circles will be unveiled at the Columbus Avenue entrance and depict New York City's location on January 1, 2000.
Among these is a Ming dynasty, Zhengde period (1506-21) saucer dish with the armillary sphere of Manuel I, one of the earliest pieces of Chinese porcelain decorated with western motifs.