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photochronograph
[foh-tuh-kron-uh-graf, -grahf]
noun
a device formerly used for taking a series of instantaneous photographs of a rapidly moving object.
a picture taken by such a device.
a chronograph in which the tracing or record is made by a pencil of light on a sensitized surface.
an instrument for measuring small intervals of time by the photographic trace of a pencil of light.
photochronograph
/ -ˌɡræf, ˌfəʊtəʊˈkrɒnəˌɡrɑːf, ˌfəʊtəʊkrəˈnɒɡrəfɪ /
noun
physics an instrument for measuring very small time intervals by the trace made by a beam of light on a moving photographic film
Other Word Forms
- photochronography noun
Word History and Origins
Origin of photochronograph1
Example Sentences
As a young artilleryman, he invented the polarizing photochronograph to measure the speed of a projectile.
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