stroboscope

Any of various instruments used to observe moving objects by making them appear stationary, especially with pulsed illumination or mechanical devices that intermittently interrupt observation.

An instrument used in the study of the periodic motion of a body, as one in rapid revolution or vibration, by illuminating it at frequent intervals (for example, by electric sparks or by a beam of light made intermittent by passing through a moving perforated plate), or again by viewing it through the openings of a revolving disk: also used as a toy. The phenakistoscope and zoëtrope represent one form of stroboscope.

An instrument for studying or observing the successive phases of a periodic or varying motion by means of light which is periodically interrupted.

An optical toy similar to the phenakistoscope. See Phenakistoscope.

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.

scientific instrument that provides a flashing light synchronized with the periodic movement of an object; can make moving object appear stationary