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Ancient Greek "Computer" Deciphered


First Posted: 07-30-08 03:51 PM   |   Updated: 08- 7-08 05:12 AM

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The New York Times reports:

The Antikythera Mechanism, sometimes called the first analog computer, was recovered more than a century ago in the wreckage of a ship that sank off the tiny island of Antikythera, north of Crete. Earlier research showed that the device was probably built between 140 and 100 B.C.

Only now, applying high-resolution imaging systems and three-dimensional X-ray tomography, have experts been able to decipher inscriptions and reconstruct functions of the bronze gears on the mechanism. The latest research has revealed details of dials on the instrument's back side, including the names of all 12 months of an ancient calendar.

In the journal report, the team led by the mathematician and filmmaker Tony Freeth of the Antikythera Mechanism Research Project, in Cardiff, Wales, said the month names "are unexpectedly of Corinthian origin," which suggested "a heritage going back to Archimedes."

No month names on what is called the Metonic calendar were previously known, the researchers noted. Such a calendar, as well as other knowledge displayed on the mechanism, illustrated the influence of Babylonian astronomy on the Greeks. The calendar was used by Babylonians from at least the early fifth century B.C.

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