"Armillary" Quotes from Famous Books
 ... long remained the most important, of astronomical instruments. It is believed that Eratosthenes invented an important modification of the gnomon which was elaborated afterwards by Hipparchus and called an armillary sphere. This consists essentially of a small gnomon, or perpendicular post, attached to a plane representing the earth's equator and a hemisphere in imitation of the earth's surface. With the aid of this, the shadow cast by the sun could be ...
— A History of Science, Volume 1(of 5) • Henry Smith Williams
... "(1). Armillary Zodiacal Sphere of 6 feet diameter. This sphere reposes on the heads of four dragons, the bodies of which after various convolutions come to rest upon the extremities of two brazen beams forming a cross, and thus bear the entire weight of the instrument. These dragons ... are ...
— The Travels of Marco Polo Volume 1 • Marco Polo and Rustichello of Pisa |
