photo chronograph

photochronograph

[foh-tuh-kron-uh-graf, -grahf]
noun
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.
3.
a chronograph in which the tracing or record is made by a pencil of light on a sensitized surface.
4.
an instrument for measuring small intervals of time by the photographic trace of a pencil of light.

Origin:
1885–90; photo- + chronograph

photochronography [foh-toh-kruh-nog-ruh-fee] , noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
photochronograph (ˌfəʊtəʊˈkrɒnəˌɡrɑːf, -ˌɡræf)
 
n
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

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