photochronograph

photochronograph

(ˌfəʊtəʊˈkrɒnəˌɡrɑːf; -ˌɡræf)
n
(General Physics) physics an instrument for measuring very small time intervals by the trace made by a beam of light on a moving photographic film
photochronography n

pho•to•chron•o•graph

(ˌfoʊ təˈkrɒn əˌgræf, -ˌgrɑf)

n.
1. a device formerly used for taking a series of instantaneous photographs of a rapidly moving object.
2. a picture taken by such a device.
[1885–90]
pho•to•chro•nog•ra•phy (ˌfoʊ toʊ krəˈnɒg rə fi) n.

photochronograph

1. a camera for recording motion by a series of photographs taken at brief intervals.
2. the photograph so produced.
3. a camera that records the exact time of the event it is photographing by exposing a moving sensitized plate to the tracing of a thin beam of light synchronized with the event.
See also: Photography, Time
References in periodicals archive ?
They describe his early life and education at West Point, his army career, his work on artillery problems and his invention of the polarizing photochronograph, his development of aviation for the army, his landline communications research, his invention of new techniques for radio and submarine cable telegraphy, and how he led the army's aviation program, led the effort to equip US forces with modern communications during World War I, and founded Muzak.