Rangefinding

Rangefinding is a technique used to determine the distance from the observer or device to an object or target. It’s commonly used in fields like surveying, photography, and sports. The process often involves emitting a signal—like light, sound, or radio waves—and measuring how long it takes for that signal to bounce back or be received. Since the speed of these signals is known, calculating the distance becomes a matter of measuring the travel time. Rangefinders enable precise measurement without physical contact, making them essential for tasks that require accuracy over varying distances.