photochronograph (English, noun)
expansion: photochronograph (plural photochronographs)
Senses:
topics: natural-sciences
physical-sciences
physics
glosses: 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.
topics: astronomy
natural-sciences
glosses: An instrument for the photographic recording of star transits.
Forms:
form: photochronographs
tags: plural