👉 A stroboscope is a device that uses light to produce an image on a screen or paper. It works by focusing the light source (usually a flashlight, LED, or other type of light source) onto a small mirror or lens, which then projects a large image onto a screen or paper. The image produced is usually made up of many tiny dots and lines that appear to move in a particular direction as the light source moves around the screen or paper. This effect can be used for a