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 buoyancy aids including full life jackets, vests, and flotation collars. The purpose, design, and composition of these buoyancy aids are very similar to the human version with the major difference being that pet buoyancy aids are not usually required by law, also they are generally not certified by the Coast Guard or any other government department. Ancient instances of the life jacket can be traced back to simple blocks of wood or cork used by Norwegian seamen. The modern life jacket is generally credited to one Captain Ward, a Royal National Lifeboat Institution inspector in the United Kingdom, who, in