Sonar (ASDIC)
Sonar activo
- Date
- 1915–1918 · confidence medium
- Place
- Toulon, France
- Credited to
- Paul Langevin and Constantin Chilowsky (France, 1915-1917); Reginald Fessenden (oscillator, 1914); British ASDIC (1918)
- People
- 👤 Paul Langevin1872–1946👤 Reginald Aubrey Fessenden1866–1932
- Field
- Movement
What it is
Underwater detection by ultrasonic pulses generated with quartz piezoelectric transducers. It was born to fight German submarines.
What it led to
- Anti-submarine warfare in both world wars
- Echo sounder for ocean mapping and fishing
- Medical ultrasound
Built on
- Piezoelectricity1880
- Modern submarine1888–1900
- Vacuum tube (Fleming diode, De Forest triode)1904–1906
- Echo sounder (Echolot)1913
- Sinking of the Titanic (motivation)