Stroboscope
WordNet
noun
(1) Scientific instrument that provides a flashing light synchronized with the periodic movement of an object; can make moving object appear stationary
WiktionaryText
Noun
- Instrument for studying or observing periodic movement by rendering a moving body visible only at regular intervals.
- A lamp that produces short bursts of light that synchronizes with a camera shutter for photographing fast-moving objects; A photo made by such a machine.