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Armillary Spheres and Sundials

armillary-sphere-animation-2.gifThe Greeks have used sundials to measure time since 100 B.C. Reminiscent of classic Greek mythology, this Atlas Armillary Sundial will demand attention, whether placed in your home or garden. An exquisite and functional work of art, the sphere is imprinted with Roman numerals to measure time as the sun casts it's shadow throughout the day, just as it did in ancient Greece.

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 or the Sun, that represent lines of celestial longitude and latitude and other astronomically important features such as the ecliptic. As such, it differs from a celestial globe, which is a smooth sphere whose principal purpose is to map the constellations. It was invented separately in ancient Greece and ancient China, with later use in the Islamic world and Medieval Europe. With the Earth as center, an armillary sphere is known as Ptolemaic. With the sun as center, it is known as Copernican.

 


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