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 Widow of Bath The Widow of Bath The Widow of Bath is a crime thriller novel by the Scottish author Margot Bennett, published in 1952. Hugh Everton, who is struggling to readjust to normal life after serving several months in prison, re-encounters his ex-lover, the vivacious Lucy, who is married to the staid Judge Bath. Against his better judgement, Hugh agrees to spend some time at their house, but before long, the judge is killed and his body vanishes. The book was adapted into a six-episode serial by the BBC in 1959, which was directed by Gerard Glaister, with the screenplay written by