weighting system
21Buoyancy — The forces at work in buoyancy In physics, buoyancy (  / …
22Buddy check — The buddy check is a procedure carried out by SCUBA divers using the buddy system where each diver checks that the other s diving equipment is configured and functioning correctly just before the start of the dive. [Sport Diving, p118,123,… …
23Glossary of SCUBA diving — Here is a glossary of scuba diving terms: Contents 1 A F 2 G L 3 M R 4 S Z A F Altitude Diving  diving at a locat …
24Conway's Game of Life — Conway game , which redirects to here, can also refer to games as defined by surreal numbers, which John Conway also developed …
25Melbourne Cup — Group I race Melbourne Cup Engraving of the finish line at the 1881 Cup Location Flemington Racecourse Melbourne, Australia Inaugurated 1861 (List of Melbourne Cup winners …
26EcoHomes — is an environmental rating scheme for homes in the United Kingdom. It is the domestic version of the Building Research Establishment s Environmental Assessment Method BREEAM, which can also be applied to a variety of non residential buildings. It …
27Civilian Space eXploration Team — CSXT/GoFast space launch, May 17, 2004. Photo by Ian Kluft KO6YQ The Civilian Space eXploration Team, known as CSXT, is a team of around 30 civilians interested in private spaceflight.[citation needed] …
28Теннисная ракетка — Теннисная ракета с мячиками на теннисном корте. Теннисная ракетка  спортивный инвентарь для игры в теннис …
29Recreational diving — Divers off Key West, Florida Recreational diving or sport diving is a type of diving that uses SCUBA equipment for the purpose of leisure and enjoyment. In some diving circles, the term recreational diving is used in contradistinction to… …
30Blue Hole (Red Sea) — Blue Hole is a diving location on east Sinai, a few kilometres north of Dahab, Egypt on the coast of the Red Sea.The Blue Hole is a submarine pothole (a kind of cave), around 130m deep. There is a shallow opening around 6m deep, opening out to… …
