ANTIKYTHERA MECHANISM SOLVED
One of the oldest archaeological puzzles, that of the nature and purpose of the so-called Antikythera Mechanism, appears to have been finally cracked by the international Antikythera Mechanism Research Project (AMRP). This mysterious object, which now consists of a large, complex metallic mass plus another 81 fragments of various sizes, went down when the ship it was carried in sank of Antikythera around 80 BC. The wreck was discovered at depths of between 45 and 60 metres by sponge-divers from the island of Simi in 1900, and its contents were brought to the surface the following year. In 1902, archaeologist Valerios Stais of the Athens Archaeological Museum recognised the existence of gears in the copper mass, and realised that it must have been a mechanical device of some kind. The mechanism was studied intensively over the following decades, but while it was clearly recognised as the most complex mechanical object to have survived from antiquity, its precise function continued to baffle researchers.
The most recent attempt, that of the AMRP, was a cross-disciplinary effort employing the most up-to-date techniques, including X-Tek’s 8-ton Blade Runner scanner and Hewlett-Packard’s PTM Dome digital imaging device. The team included astronomers Mike Edmunds (Cardiff University), Ioannis Seiradakis (U. of Salonika) and Xenophon Mousas (Athens U.), mathematician Tony Freeth (Cardiff U.), physicist Ioannis Bitsakis (Athens U.), archaeologist Mary Zafeiropoulou (National Archaeological Museum) and palaeographer Agamemnon Tselikas (Cultural Institute of the National Bank of Greece).
The first results of their research have been just published in the prestigious scientific periodical Nature under the title “Decoding the ancient Greek astronomical calculator known as the Antikythera mechanism”. In effect, they argue that the device, almost certainly based on the theories of the mathematician and geographer Hipparchus (190-120 BC), who in turn appears to have had access to the meticulous astronomical records of the Babylonians, was in essence a portable astronomical calculator; using a complex system of more than 30 interlocking gears, one of which corresponded to the Babylonian great lunar year (19 years, or 235 complete lunar months), it would have been possible to make a series of accurate predictions, including those of solar and lunar eclipses.
In the light of this discovery, it is apparent that both the scientific knowledge and the technical achievements of the Hellenistic period are due for radical revaluation. For more information, consult the site www.antikythera-mechanism.com and www.antikythera-mechanism.gr.
George Poulos has also gathered together material and several links on the subject on this site. Go to:
http://www.kythera-family.net/index.php?nav=64&hits=20&searchword=mechanism5-48&did=1883-1
John Stathatos