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Photochronograph
noun
Definitions
Noun
- 1 An instrument for recording very short intervals of time. The record is made by the power of a magnetic field, due to an electric signaling current, to turn the plane of polarization of light. A flash, coinciding in time and duration with the signal, is thus produced and is photographed on a moving plate.
- 2 An instrument for the photographic recording of star transits.
Etymology
From photo- + chronograph.
See also for "photochronograph"
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