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Geneva mechanism
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The Geneva mechanism is an essential component of many film projectors which works in concert with other projector components such as the shutter and intermittent sprocket in order to transform a film strip composed of static pictures into what appear to be "moving images". It is a mechanism which converts rotational motion into periodic motion.
How it Works
- Dwell state
- Pull-down
Resources
- Wikipedia article on the Geneva Drive
- Kodak Film Notes "The Intermittent Movement"
- A video animation and explanation of the Geneva movement can be found here