Sonar - Wikipedia, the free encyclopedia
|
|
Sonar (originally an acronym for sound navigation and ranging ) is a technique that uses sound propagation (usually underwater) to navigate, communicate with or detect other vessels. There are two ...
en.wikipedia.org/wiki/Sonar
|
|
|
A Brief History of the Use of Sound in Ocean Exploration ... The onset of WW1, brought on another dramatic effort to understand both the concepts and practical applications of underwater sound for submarine, surface ship, weaponry, and target location needs (Urick, 1983). The term 'SONAR', SOund Navigation And Ranging,
|
woodshole.er.usgs.gov/operations/sfmapping/soundhist.ht...
woodshole.er.usgs.gov/operations/sfmapping/soundhist.htm
|
|
|
|
Home > Library > History, Politics & Society > US ... (underwater sound navigation ranging) can be either of the passive or active type. Passive sonars were developed first and rely upon listening for noise generated by the target vessel, usually submarines (however, submarines also use sonar to detect other ships).
|
www.answers.com/topic/sonar
|
|
|
SONAR (SOund NAvigation and Ranging) — or sonar — is a technique that uses sound propagation under water (primarily) to navigate, communicate or to detect other vessels. There are two kinds of sonar — active and passive. ... History of sonar...
|
www.solarnavigator.net/sonar.htm
www.solarnavigator.net/sonar.htm
|
|
(from “sound navigation ranging”), technique for detecting and determining the distance and direction of underwater objects by acoustic means. ... TOPIC HISTORY ... sound ranging (acoustics)
|
www.britannica.com/EBchecked/topic/554214/sonar
|
|
A history of ultrasonography in Obstetrics and Gynecology, part 1 ... he story of the development of ultrasound applications in medicine should probably start with the history of measuring distance under water using sound waves. The term SONAR refers to Sound Navigation and Ranging.
|
www.ob-ultrasound.net/history1.html
www.ob-ultrasound.net/history1.html
|
|
When the officer of the deck says "the smoking lamp is out" before drills, refueling or taking ammunition, that is the Navy's way of saying "cease smoking."; Sonar; Sound Navigation Ranging.
|
www.history.navy.mil/trivia/trivia03.htm
www.history.navy.mil/trivia/trivia03.htm
|
|
Sonar refers to sound navigation ranging. It involves using and interpreting sounds to detect something's location underwater and is especially handy for two reasons: Bodies of water are often far too murky for sight, and sound actually travels quickly underwater, much faster than it does in air.
|
animals.howstuffworks.com/mammals/dolphin-disarm-sea-mi...
animals.howstuffworks.com/mammals/dolphin-disarm-sea-mine1.htm
|
|
The use of sound to 'echo locate' underwater in the same way as bats use sound for aerial navigation seems to have been prompted by the Titanic disaster of 1912. The world's first patent for an underwater echo ranging device was filed at the British Patent Office by English meteorologist Lewis Richardson,
|
