Neutral buoyancy diver maintains neutral buoyancy by continuous correction, usually by controlled breathing, as neutral buoyancy is an unstable condition for a compressible object in a liquid. The mathematician Archimedes discovered much of how buoyancy works more than 2000 years ago. In his research, Archimedes discovered that an object is buoyed up by a force equal to the weight of the water displaced by the object. In other words, an inflatable boat that displaces 100 pounds (45 kilograms) of water is buoyed up by that same weight of support. An object that floats in the water is known as being "positively" buoyant.
The Legend of Zelda: A Link to the Past featuring new 3D visuals. On November 22, 2013, Nintendo released "The Legend of Zelda: A Link Between Worlds", which takes place in the same world, but features a new storyline, new puzzles and original dungeons. Height and depth play a large role in the game by taking advantage of the 3DS’ 3D feature, while maintaining the traditional top-down perspective. The Legend of Zelda: A Link to the Past The Legend of Zelda: A Link to the Past is an action-adventure video game developed and published by Nintendo for the Super Nintendo Entertainment System video game console. It is the third