The working principle of stroboscope is based on the concept of persistence of vision and synchronization of light pulses with the motion of the object. When a stroboscope emits small beams of light at regular intervals, our eyes retain the image for a brief moment because of the persistence of vision. If the flash frequency matches or is a multiple of the object's motion frequency, the object appears to be stationary or moving slowly.

By adjusting the flash frequency, the stroboscope can create the illusion of slowing or freezing the motion of the object. This synchronization allows us to see and analyze the motion of an object in detail. The stroboscope's ability to capture and reveal rapid motion has proven invaluable in fields such as engineering, research and quality control.