2009年03月03日

Planetary gears

The Antikythera Mechaninm is an intricate bronze construction discovered damaged and fragmented in the wreck of a cargo ship pff the Greep island of Antikythera in 1900.

Made towards the end of the second century BC, it contains 30 bronza gear wheels and many astronomical isscriptions.

The mechanism is technically more complex than any known device for at least a millennium afterwords.

It acted as a lunar-solar calender, but its specific functions have remained controversial.

Now a joint British-Greek team has reconstructed the device based on surface imaging and X-ray tomography of the surviving fragments.

The reconstruction shows how the gears worked, and doubles the number of deciphered inscriptions.

The Mechanism seems to have been a sophisticated predictor for the Sun/Moon/Earth system, and can justfiably be caimed as the world's oldest known analogue computer.


### DataBace ###
nature Vol.444 519-652 Issue no.7119 30 November 2007
News Feature p.534 / Insearch of lost time / Jo Marchant reports.
News & Views p.551 / ARCHAEOGY : High thech from Ancient Greece / Francois Charette
Letter p.587 / Decoding the anciment Greek astronomical calculator known as the Antikythera Mechanism / T Freeth et al. (Cardiff University, Images First Ltd)

posted by 0≠素子 at 22:02| Comment(0) | archaeology | このブログの読者になる | 更新情報をチェックする
×

この広告は1年以上新しい記事の投稿がないブログに表示されております。