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A sailor and a man on shore, both sounding the depth with a line. Depth sounding, often simply called sounding, is measuring the depth of a body of water.Data taken from soundings are used in bathymetry to make maps of the floor of a body of water, such as the seabed topography.
Echo sounding or depth sounding is the use of sonar for ranging, normally to determine the depth of water . It involves transmitting acoustic waves into water and recording the time interval between emission and return of a pulse; the resulting time of flight , along with knowledge of the speed of sound in water, allows determining the distance ...
Thomson noted that no depth-sounding apparatus was available on the ship to assist the operation. [4] During 1872, on board his own sailing yacht Lalla Rookh and the cable-laying ship CS Hooper , Thomson conducted trials of a sounding machine, with the main improvement over existing practice being the use of piano wire instead of hemp rope for ...
AHED Music Corporation, Ltd. was a Canadian company owned by Phil G. Anderson [1] that produced guitar amplifiers, as well as guitars.Its main product line was the GBX amplifier, which could reach 180 watts with 4x10", 4x12" or 2x15" speakers.
The company was founded by Owsley Stanley as a workshop in Grateful Dead's rehearsal room in Novato, California, near San Francisco, to help improve the band's entire sound chain, from its instruments to its sound reinforcement system. Eventually Alembic was actively modifying and repairing guitars and basses, recording sound, and designing and ...
The SOFAR channel (short for Sound Fixing and Ranging channel), or deep sound channel (DSC), is a horizontal layer of water in the ocean at which depth the speed of sound is minimal, in average around 1200 m deep. [2] It acts as a wave-guide for sound, and low frequency sound waves within the channel may travel thousands of miles before ...