Buoyancy tersely: Buoyancy = weight of displaced fluid. Archimedes' principle does not consider the surface tension (capillarity) acting on the body, but this additional force modifies only the amount of fluid displaced and the spatial distribution of the displacement, so the principle that "Buoyancy = weight of displaced fluid" remains valid. The weight of the displaced fluid is directly proportional to the volume of the displaced fluid (if the surrounding fluid is of uniform density). In simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or
Buoyancy aid 1854, created a cork vest to be worn by lifeboat crews for both weather protection and buoyancy. Buoyancy aid Buoyancy aids are a specialist form of "personal flotation device" (PFD) used most commonly by kayakers, canoeists and dinghy sailors. They are designed as a flotation aid, rather than a life-saving device and have several key differences to other PFD's and lifejackets. Regardless of the specification of buoyancy aids, they do not provide (nor are they intended to) the same high level of protection as lifejackets. Therefore, they should not be used as a substitute for a life-jacket, particularly where children