Until yesterday i thought that nothing direct is known about the "Archimedes's planetarium" - an elaborate ancient planetarium based on complex gear mechanism that could represent the geocentric motions of the seven classical planets (the sun, the moon and the first 5 planets in the solar system). I thought the only information known about this instrument was that Archimedes wrote a (now-lost) manuscript, entitled "on spheres-making", on the construction of such mechanisms, and the possibility of it related to the "Antikythera Planetarium" (discovered in 1902).
But yesterday i read the abstract of a recently published book "THE RECOVERED ARCHIMEDES PLANETARIUM" by the author GIOVANNI PASTORE, according to which an 2006 archeological excavation found a fragment of gear that might be a part, or relate to the planetarium of Archimedes. The book's abstract makes several claims that seem to me very interesting:
- That in some aspects Archimedes's planetarium was even more advanced than the Antikythera Planetarium sinced it incorporated a special teeth's profile based on mathematical principles rediscovered only in the 17th and 18th century (in a youtube video the speaker mentions the teeth profile was based on the cycloid curve).
- That Archimedes's device was actually a three dimensional planetrium while the Antikythera Planetarium was an analog computer with two dimensional display.
- That a certain Roman general (i don't remember the name) deliberately attacked the Mecadonians in a dark night of lunar eclipse (in order to use the element of surprise). It suggests a conjecture that the Roman general knew earlier that there is going to be a lunar eclipse beacuse he saw the date calculated by Archimedes's device.
So, i'd like to know if anyone can tell something about the "gear of Olbia". Did someone here read this book? is it worth buying?