The Antikythera mechanism (Fragment A front).

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The Antikythera mechanism (play /ˌæntɨkɨˈθɪərə/ ANT-i-ki-THEER-ə or /ˌæntɨˈkɪθərə/ ANT-i-KITH-ə-rə) is an ancient analog computer designed to calculate astronomical positions. It was recovered in 1900–1901 from the Antikythera wreck, but its significance and complexity were not understood until a century later. Jacques-Yves Cousteau visited the wreck in 1978, but found no additional remains of the Antikythera mechanism. The construction has been dated to the early 1st century BC. Technological artifacts approaching its complexity and workmanship did not appear again until the 14th century A.D., when mechanical astronomical clocks began to be built in Western Europe.

Professor Michael Edmunds of Cardiff University, who led the most recent study of the mechanism, said: "This device is just extraordinary, the only thing of its kind. The design is beautiful, the astronomy is exactly right. The way the mechanics are designed just makes your jaw drop. Whoever has done this has done it extremely carefully ... in terms of historic and scarcity value, I have to regard this mechanism as being more valuable than the Mona Lisa.

The Antikythera mechanism is displayed at the National Archaeological Museum of Athens, accompanied by a reconstruction made and donated to the museum by Derek de Solla Price. Other reconstructions are on display at the American Computer Museum in Bozeman, Montana, the Children's Museum of Manhattan in New York, in Kassel, Germany, and at the Musee des Arts et Metiers in Paris.

The mechanism was approximately 340 × 180 × 90 mm in size and comprised around 30 bronze gears (although more could have been lost) housed in a wooden box. The largest gear was approximately 140 mm in diameter and had 224 teeth and is clearly visible in fragment A. The mechanism's remains were found as 82 separate fragments of which only six contain any gears or inscriptions.

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Comments (216)

ROSTAMDALILA on August 10, 2015

Velmi zajímavý snímek! Super!

Vše nejlepší a hodně štěstí přeje, za přízeň, návštěvu mé galerie a milé komentáře děkuje a mnoho srdečných pozdravů zasílá Jarda z Potštejn


hermelin on August 14, 2015

Very interesting... Best wishes from Hungary! Lajos

Heinrich Andreas on October 11, 2015

Eine wunderschönes und sehr interessantes Exponat F+L
Schöne Grüße, Heinrich

Kicaj on October 17, 2015

Rewelacyjne zdjęcie LIkE

Pozdrawiam Kicaj

João Paulo Coutinho on October 26, 2015

Excelente foto.LIKE

Kamalakar Anthati on November 18, 2015

Beautiful View,Excellent shot,
Greetings From India,Kamalakar.
Keep Panoramio ALIVE.

Cornleo on November 18, 2015

Very interesting export, LIKE + F, greetings Agathe

moatlspeed on November 23, 2015

Great! Really interesting! L+F, greetings from Bavaria, Martin

ほなみよしえ on November 27, 2015

WOW! Great ancient relics. ☆☆Favorite46+L213!☆☆

Have a nice day.

Best wishes from JPN,SD34

Klaus Bechmann on November 29

Very impressively, like214. Best regards Klaus

Jonas12611 on December 2

Thank You for visit.
Like #215 for excellent closeup documentary photo.
Best wishes, Jonas.

Paolo P L on December 26

like fav felice anno nuovo!

Ramil Rzayev on March 15

Beautiful photo, nice shot!


Best greetings from Azerbaijan, RAMIL

Antonio Aroca on May 12

Interesante instrumento, bien fotografiado. L220+f500, mis mejores deseos desde Murcia.

supraph2 14 days ago

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Photo details

  • Uploaded on July 23, 2012
  • © All Rights Reserved
    by Νίκος Γεωργακόπουλος
    • Camera: Panasonic DMC-FZ150
    • Taken on 2012/07/22 08:32:47
    • Exposure: 0.040s (1/25)
    • Focal Length: 16.80mm
    • F/Stop: f/3.400
    • ISO Speed: ISO1600
    • Exposure Bias: 0.00 EV
    • No flash