Word Story
Sonar is a technique that relies on emitting sound pulses and timing how long they take to bounce back from objects, enabling precise distance and shape measurements underwater. In a broader sense, the word can describe any biological or technological echo-location system, such as the way bats or dolphins perceive their environment without sight. In everyday life, sonar appears most often on fishing boats, where anglers use it to locate fish, and in naval operations for detecting submarines or mines. One famous real-world application occurred during the search for the missing Malaysia Airlines Flight 370, when ships employed side-scan sonar to map vast stretches of the Indian Ocean floor, hoping to spot debris.