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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Buoyancy
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Buoyancy, or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the
A metallic coin (an old British pound coin) floats in mercury due to the buoyancy force upon it and appears to float higher because of the surface ten
A metallic coin (an old British pound coin) floats in mercury due to the buoyancy force upon it and appears to float higher because of the surface tension of the mercury.
A duck has difficulties to get under water due to its buoyancy. When no swimming forces are implied, the natural equilibrium of forces keeps about hal
A duck has difficulties to get under water due to its buoyancy. When no swimming forces are implied, the natural equilibrium of forces keeps about half of the duck above water.
Density column of liquids and solids: baby oil rubbing alcohol (with red food colouring) vegetable oil wax water (with blue food colouring) and alumin
Density column of liquids and solids: baby oil rubbing alcohol (with red food colouring) vegetable oil wax water (with blue food colouring) and aluminium.
Submarine
Videos
A submarine is a watercraft capable of independent operation underwater. The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to
Buoyancy
…equilibrium is unstable, and it rises and expands on the slightest upward perturbation, or falls and compresses on the slightest downward perturbation. Submarines submerge by filling large ballast tanks with seawater. To dive, the tanks are opened to allow air to exhaust out the top of the tanks, while the water…
US Virginia-class submarine underway in Groton, Connecticut, July 2004
US Virginia-class submarine underway in Groton, Connecticut, July 2004
Russian Akula-class submarine of the Northern Fleet, in 2008
Russian Akula-class submarine of the Northern Fleet, in 2008
An early submersible craft, built by Cornelis Drebbel, propelled by oars
An early submersible craft, built by Cornelis Drebbel, propelled by oars
Cutaway replica of Bushnell's "Turtle" at the Submarine Force Library and Museum, Groton, Connecticut
Cutaway replica of Bushnell's "Turtle" at the Submarine Force Library and Museum, Groton, Connecticut