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One fathom is equal to: 1.8288 metres exactly (Official international definition of the fathom) [10] 1.828804 m (Obsolete measurement of the fathom based on the US survey foot, only for use of historical and legacy applications) [11] 2 yards (1 yard is exactly 1 ⁄ 2 fathom) 6 feet (1 foot is exactly 1 ⁄ 6 fathom) 18 hands; 72 inches
To help compare different orders of magnitude, this section lists lengths between 10 −7 and 10 −6 m (100 nm and 1 μm). 100 nm – greatest particle size that can fit through a surgical mask [80] 100 nm – 90% of particles in wood smoke are smaller than this. [citation needed] 120 nm – greatest particle size that can fit through a ULPA ...
The bow hit the bottom at a speed of about 20 knots (10 metres per second), digging about 60 feet (20 m) deep into the mud, up to the base of the anchors. The impact bent the hull in two places and caused it to buckle downwards by about 10° under the forward well deck cranes and by about 4° under the forward expansion joint.
12 Feet Deep (originally titled The Deep End) [2] is a 2017 American psychological horror-thriller film written and directed by Matt Eskandari.It stars Alexandra Park and Nora-Jane Noone as sisters who find themselves trapped inside a public swimming pool when the manager activates the pool cover and leaves for the holidays.
Therefore, mean depth figures are not available for many deep lakes in remote locations. [9] The average lake on Earth has the mean depth 41.8 meters (137.14 feet) [ 9 ] The Caspian Sea ranks much further down the list on mean depth, as it has a large continental shelf (significantly larger than the oceanic basin that contains its greatest depths).
The US Navy air decompression tables allow flying with a cabin altitude of 8000 feet for repetitive group C, which results from a bottom time of 61 to 88 minutes at a depth of 15 feet (4.6 m), or a bottom time of 102 to 158 minutes at a depth of 10 feet (3.0 m).
At altitude 3,000 feet (910 m), P 1 = 0.7 bar (approximatelty), and at a depth of 10 m, P 2 = 1.7 bar, so V 2 /V 1 = 0.7/1.7 = 0.412 As a consequence, dry suit squeeze , mask squeeze , and ear and sinus squeezes will all develop more rapidly at higher altitude.
A light-year is the distance light travels in one Julian year, around 9461 billion kilometres, 5879 billion miles, or 0.3066 parsecs. In round figures, a light year is nearly 10 trillion kilometres or nearly 6 trillion miles. Proxima Centauri, the closest star to Earth after the Sun, is around 4.2 light-years away. [89]