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"Armillary Sphere, an instrument used in astronomy.  In its simplest  form, consisting of a ring fixed in the plane of the equator, the  armilla is one of the most ancient of astronomical instruments.   Slightly developed, it was crossed by another ring fixed in the plane of  the meridian." — The Encyclopedia Britannica, 1910Source: The Encyclopedia Britannica, Eleventh Edition

"Armillary Sphere, an instrument used in astronomy. In its simplest form, consisting of a ring fixed in the plane of the equator, the armilla is one of the most ancient of astronomical instruments. Slightly developed, it was crossed by another ring fixed in the plane of the meridian." — The Encyclopedia Britannica, 1910
Source: The Encyclopedia Britannica, Eleventh Edition

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    There’s something arcane about the way our ancients conducted their sciences; it’s so infatuating and attractive, in a...
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