photochronograph
English
Etymology
photo- + chronograph
Noun
photochronograph (plural photochronographs)
- (physics) 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.
- (astronomy) An instrument for the photographic recording of star transits.
Anagrams
- chronophotograph