Age dating terra cotta

Rated 4.25/5 based on 840 customer reviews

It has puzzled and intrigued historians of science and technology since its discovery.The device seemed to have a range of interlocking gears made of bronze and a hand crank to give a turning movement to the geared mechanism, plus a display that showed information about the moon, sun and planets against a background of stars.It is probable that the Antikythera mechanism was not unique.

The Antikythera mechanism is one of the world's oldest known geared devices.Another, smaller, device dating from the sixth century AD, has been discovered which models the motions of the sun and moon and provides a previously missing link between the Antikythera mechanism and later Islamic calendar computers, such as the 13th century example at the Museum of the History of Science in Oxford.That device, in turn, uses techniques described in a manuscript written by al-Biruni, an Arab astronomer, around 1000AD.Wright's reconstruction of the device, with 72 gears, suggests it may have been an orrery that was intended to mechanically demonstrate the motions of the five planets known to the Greeks of the time.Taking all the available facts into account, the prevailing theory at the moment is that the device was a clockwork-like mechanism designed to display the progress and positions of the sun, moon, and probably all five of the other planets known at the time (Mercury, Venus, Mars, Jupiter, and Saturn) over a period of 19 years.

Leave a Reply