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.
Lilith, The Legend of the First Woman seems to have asked no more than her fair half, while Adam was the encroacher, on the assumption that they were created equal —inspired Collier's version of the legend, according to which Lilith leaves Eden voluntarily, rather than submit to dominance, but loses thereby the blessing of motherhood. This alone, not either Adam or Eden, she envies Eve, and at last steals the coveted first human baby, which dies, bereft of its mother, and so gives Lilith the reputation in legend of being a child-murderess. When Collier discovered that the word "lullaby" (Lilla, abi—begone, Lilith!) denoted the songs which mothers