Calendars with Olympiad display and eclipse prediction on the Antikythera Mechanism
T Freeth, A Jones, JM Steele, Y Bitsakis - Nature, 2008 - nature.com
Previous research on the Antikythera Mechanism established a highly complex ancient
Greek geared mechanism with front and back output dials 1, 2, 3, 4, 5, 6, 7. The upper back
dial is a 19-year calendar, based on the Metonic cycle, arranged as a five-turn spiral 1, 6, 8.
The lower back dial is a Saros eclipse-prediction dial, arranged as a four-turn spiral of 223
lunar months, with glyphs indicating eclipse predictions 6. Here we add surprising findings
concerning these back dials. Though no month names on the Metonic calendar were …
Greek geared mechanism with front and back output dials 1, 2, 3, 4, 5, 6, 7. The upper back
dial is a 19-year calendar, based on the Metonic cycle, arranged as a five-turn spiral 1, 6, 8.
The lower back dial is a Saros eclipse-prediction dial, arranged as a four-turn spiral of 223
lunar months, with glyphs indicating eclipse predictions 6. Here we add surprising findings
concerning these back dials. Though no month names on the Metonic calendar were …
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