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The metre (or meter) sea water (msw) is a metric unit of pressure used in underwater diving.It is defined as one tenth of a bar. [1] [2]The unit used in the US is the foot sea water (fsw), based on standard gravity and a sea-water density of 64 lb/ft 3.
Many organisms adapted to deep-water pressure cannot survive in the upper parts of the water column: the pressure difference can be very significant (approximately one atmosphere for each 10 meters of water depth). Many have adapted to live on the substrate (bottom).
A comparable hydrostatic pressure occurs at a depth of only 10 metres (33 ft) (9.8 metres (32 ft) for sea water). Thus, at about 10 m below the surface, the water exerts twice the pressure (2 atmospheres or 200 kPa) as air at surface level.
1019.716 centimetres of water (cmH 2 O) (1 bar approximately corresponds to the gauge pressure of water at a depth of 10 meters). 1 millibar ( mbar ) is equal to: 1 × 10 −3 bar (0.001 bar)
A typical water meter register showing a meter reading of 8.3 gallons. Notice the black "1" on the odometer has not yet fully turned over, so only the red hand is read. Water meters connected to remote reading devices through three-wire cables. There are several types of registers on water meters.
Training for Olympic diving competition requires 10-meter diving facilities, which are scant in some parts of the world. For example, the Walter Schroeder Aquatic Center, built in 1979 as a YMCA facility, is one of only two Olympic-sized pools in Wisconsin that can host large events, and it is the only facility in the southeast Wisconsin region ...
This article lists rivers by their average discharge measured in descending order of their water flow rate. Here, only those rivers whose discharge is more than 2,000 m 3 /s (71,000 cu ft/s) are shown. It can be thought of as a list of the biggest rivers on Earth, measured by a specific metric.
Since water is much denser than air, much greater changes in ambient pressure can be experienced under water. Each 10 metres (33 ft) of depth adds another bar to the ambient pressure. Ambient-pressure diving is underwater diving exposed to the water pressure at depth, rather than in a pressure-excluding atmospheric diving suit or a submersible.