planetarium consisting of an apparatus that illustrates the relative positions and motions of bodies in the solar system by rotation and revolution of balls moved by wheelwork; sometimes incorporated in a clock
a clockwork model of the solar system
Origin: Named after Charles Boyle, 4th Earl of Orrery (1676-1731), for whom such a device was made.
An orrery is a mechanical device that illustrates the relative positions and motions of the planets and moons in the Solar System in a heliocentric model. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to the Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
Chambers 20th Century Dictionary
or′ėr-i, n. an apparatus for illustrating, by balls mounted on rods and moved by clockwork around a centre, the size, positions, motions, &c. of the heavenly bodies. [From Charles Boyle, fourth Earl of Orrery (1676-1731).]
The Nuttall Encyclopedia
is a mechanical toy which exhibits, by an arrangement of rods, balls, and toothed wheels, the sun, the planets, and their moons, all performing their respective motions; so named after the Earl of Orrery, for whom Charles Boyle made the first one in 1715.
The numerical value of orrery in Chaldean Numerology is: 1
The numerical value of orrery in Pythagorean Numerology is: 9
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