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  2. Artillery sound ranging - Wikipedia

    en.wikipedia.org/wiki/Artillery_sound_ranging

    The sound ranging operators used equipment that augmented human hearing. Using the gun flash, the flash crew would determine a bearing to the gun using a theodolite or transit . The sound detection crew would determine the difference in time between the gun flash and the sound of the gun, which was used to determine the range of the gun.

  3. Old School RuneScape - Wikipedia

    en.wikipedia.org/wiki/Old_School_RuneScape

    Old School RuneScape is a massively multiplayer online role-playing game (MMORPG), developed and published by Jagex.The game was released on 16 February 2013. When Old School RuneScape launched, it began as an August 2007 version of the game RuneScape, which was highly popular prior to the launch of RuneScape 3.

  4. Sonar - Wikipedia

    en.wikipedia.org/wiki/Sonar

    Sonar (sound navigation and ranging or sonic navigation and ranging) [2] is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances , communicate with or detect objects on or under the surface of the water, such as other vessels.

  5. Acoustic location - Wikipedia

    en.wikipedia.org/wiki/Acoustic_location

    Sonar (sound navigation and ranging) is a technique that uses sound propagation under water (or occasionally in air) to navigate, communicate or to detect other vessels. There are two kinds of sonar – active and passive. A single active sonar can localize in range and bearing as well as measuring radial speed.

  6. 5th Regiment Royal Artillery - Wikipedia

    en.wikipedia.org/wiki/5th_Regiment_Royal_Artillery

    It currently serves in the Surveillance and Target Acquisition role and is equipped with counter-battery radars and acoustic sound ranging equipment; it also provides Special Observation Post teams. British M107 Special Observer Badge, worn by Soldiers who have passed STA Patrol Training

  7. Sodar - Wikipedia

    en.wikipedia.org/wiki/SODAR

    Sodar, an acronym of sonic detection and ranging, is a meteorological instrument used as a wind profiler based on the scattering of sound waves by atmospheric turbulence. Sodar equipment is used to measure wind speed at various heights above the ground, and the thermodynamic structure of the lower layer of the atmosphere .

  8. SOFAR channel - Wikipedia

    en.wikipedia.org/wiki/SOFAR_channel

    The SOFAR channel (short for sound fixing and ranging channel), or deep sound channel (DSC), [1] is a horizontal layer of water in the ocean at which depth the speed of sound is at its minimum. The SOFAR channel acts as a waveguide for sound, and low frequency sound waves within the channel may travel thousands of miles before dissipating.

  9. Echo sounding - Wikipedia

    en.wikipedia.org/wiki/Echo_sounding

    The speed of sound will vary slightly depending on temperature, pressure and salinity; and for precise applications of echosounding, such as hydrography, the speed of sound must also be measured, typically by deploying a sound velocity probe in the water. Echo sounding is a special purpose application of sonar used to locate the bottom.