Sonar

Sonar is an instrument that sends intense waves to locate submerged objects under water. Sonar is an acronym for Sound Navigation and Ranging. This instrument has been used for submarine and mine detection, depth detection, commercial fishing, diving safety and communication at sea. Two of the main kinds of Sonar include active sonar and passive sonar. The first Sonar device was created by a man named Lewis Nixon in 1906. He first created this device to locate icebergs and later, especially during World War 1 to locate submarines. The popularity of Sonar devices increased greatly in 1915 when Paul Langévin created a Sonar device that secialized in locating submarines. He did this by using the piezoelectric property of quartz. Even though the war was almost over and not in need of these Sonar devices Langévin greatly influenced newer designs of sonar