Ultrasonic range finders bounce sound waves off distant objects and record the time it takes for the wave to return in order to measure the distance. It’s the same technology, SONAR, that bats use to navigate in the dark.
Ultrasonic range finders bounce sound waves off distant objects and record the time it takes for the wave to return in order to measure the distance. It’s the same technology, SONAR, that bats use to navigate in the dark.
