Reginald Fessenden
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Reginald Aubrey Fessenden was a Canadian-American electrical engineer and inventor who received hundreds of patents in fields related to radio and sonar between 1891 and 1936.
Fessenden in 1903
Whitney Institute in Bermuda, founded in 1881, of which Fessenden was headmaster
Located near Fessenden's birthplace, this plaque was installed by the Historic Sites and Monuments Board of Canada
It reviews his telecommunications and submarine detection work
Sonar
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Sonar is a technique that uses sound propagation to navigate, measure distances, communicate with or detect objects on or under the surface of the water, such as other vessels.
Reginald Fessenden
…6, 1866 – July 22, 1932) was a Canadian-American electrical engineer and inventor who received hundreds of patents in fields related to radio and sonar between 1891 and 1936 (seven of them after his death). Fessenden pioneered developments in radio technology, including the foundations of amplitude…
French F70 type frigates (here, La Motte-Picquet) are fitted with variable depth sonar (VDS) type DUBV43 or DUBV43C towed sonars.
A sonar image of the Soviet Navy minesweeper T-297, formerly the Latvian Virsaitis, which was shipwrecked in December 1941 in the Gulf of Finland.
Fessenden operating underwater oscillator in 1915.
Bubble clouds shown under the sea. From ref.