Cosma Home > Communication > Media > Antikythera Mechanism


Antikythera Mechanism – The Clockwork Computer (The Economist)
Antikythera mechanism (Wikipedia)

On the Trail of an Ancient Mystery (John Markoff, New York Times)
Mysterious Antikythera Mechanism Is Even Older Than We Thought (Marissa Fessenden,


These are organized by a classification scheme developed exclusively for Cosma. More…



Antikythera mechanism is an ancient analogue computer and orrery used to predict astronomical positions and eclipses for calendrical and astrological purposes, as well as the Olympiads, the cycles of the ancient Olympic Games.

Found housed in a 340 millimetres (13 in) × 180 millimetres (7.1 in) × 90 millimetres (3.5 in) wooden box, the device is a complex clockwork mechanism composed of at least 30 meshing bronze gears. Its remains were found as one lump, later separated in three main fragments, which are now divided into 82 separate fragments after conservation works. Four of these fragments contain gears, while inscriptions are found on many others. The largest gear (clearly visible in Fragment A at right) is approximately 140 millimetres (5.5 in) in diameter and originally had 223 teeth.

The artifact was recovered probably in July 1901 from the Antikythera shipwreck off the Greek island of Antikythera. After the knowledge of this technology was lost at some point in antiquity, technological artifacts approaching its complexity and workmanship did not appear again until the development of mechanical astronomical clocks in Europe in the fourteenth century. — Wikipedia



The Antikythera Mechanism I With Java animations (Bill Casselman, American Mathematical Society)
Simulation of the Antikythera Mechanism (Manos Roumeliotis)



The History of the Antikythera Mechanism


The Antikythera Mechanism at the National Archaeological Museum (Athens, Greece)


WorldCat, Library of Congress, UPenn Online Books, Open Library




NPR Archives, Google News









  • How the Ancient Greeks (sort of) invented robots...
    on December 11, 2018 at 3:45 pm

    How the Ancient Greeks (sort of) invented robots  ProspectThe Greeks are well known for inventing a bunch of useful stuff: theatre, philosophy, history and democracy. Less well known is the fact that they invented robots. […]

  • Google honors Nelly Sachs, Jewish poet who...
    on December 10, 2018 at 11:29 am

    Google honors Nelly Sachs, Jewish poet who escaped Nazi Germany  KREM.comGoogle is using its logo Monday to pay tribute to Nelly Sachs, a Jewish poet who escaped Nazi Germany and later wrote about the aftermath of World War II. […]

  • Were the Dark Ages Really Dark? - Ancient Origins
    on December 9, 2018 at 2:13 pm

    Were the Dark Ages Really Dark?  Ancient OriginsThe idea of a worldwide Dark Age or universal decline in man's knowledge may be difficult to accept because the broad deterioration of ancient civilizations ... […]

  • Sunday Reading: The Ancient World - The New Yorker
    on December 9, 2018 at 10:04 am

    Sunday Reading: The Ancient World  The New YorkerFrom The New Yorker's archive, stories about surprising discoveries from the past, including pieces by John Seabrook, Judith Thurman, Edmund Wilson, Elif ... […]

  • 'Antikythera Shipwreck' Exhibition in Beijing...
    on December 7, 2018 at 2:00 pm

    'Antikythera Shipwreck' Exhibition in Beijing Extended to February 2019  GTP HeadlinesAn exhibition on Greece's Antikythera shipwreck, running at The Palace Museum in Beijing, China, will be extended until February 14, 2019. […]