the.com/strobe

means A light that flashes on and off in rapid, controlled bursts, often used to freeze or fragment motion so it can be seen frame by frame.

from From Greek 'strobos,' meaning 'a whirling around' or 'twisting,' related to 'strephein,' 'to twist' or 'turn.' The word entered modern use through 'stroboscope,' a 19th-century device built to study rotating or vibrating objects by flashing light in sync with their movement, making a spinning wheel appear frozen or slowed. 'Strobe' was later clipped from that longer scientific term, carrying the whirl of its Greek root into every dance floor and camera flash.