** Atlas III was a US launch vehicle ( 2000 – 2005 )

** Atlas V ( 2002 – Present )

** Atlas Major, a Standard Motor Company van 1962 – 1963

** The Banach – Tarski paradox.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.

** The Hahn – Banach theorem in functional analysis, allowing the extension of linear functionals

** The Banach – Alaoglu theorem about compactness of sets of functionals.

** Every Tychonoff space has a Stone – Čech compactification.

** This is a distinguished work which stands out from, and above, many of the books and articles which have ben written in this century on Avicenna ( Ibn Sīnā ) ( A. D. 980 – 1037 ).

** The numbers and are not algebraic numbers ( see the Lindemann – Weierstrass theorem ); hence they are transcendental.

** Laozi ( 5th – 4th century BC )

** Ge Hong ( 283 AD – 343 AD )

** Xun Zi ( c. 312 BC – 230 BC )

** Gongsun Long ( c. 325 BC – c. 250 BC )

** Zou Yan ( 305 BC – 240 BC )

** Mani ( c. 216 AD – 276 AD )

** Haliotis brazieri f. hargravesi ( Cox, 1869 ) – synonym: Haliotis ethologus, the Mimic abalone, Haliotis hargravesi, the Hargraves ’ s abalone

** Haliotis dalli roberti McLean, 1970 – synonym: Haliotis roberti

** Haliotis diversicolor squamata Reeve, 1846 – synonym: Haliotis squamata – the scaly Australian abalone

** Haliotis diversicolor supertexta – the Taiwan abalone or jiukong

** Haliotis kamtschatkana assimilis Dall, 1878 – synonym: Haliotis assimilis, the threaded abalone

** Haliotis ovina f. patamakanthini Dekker, Regter, & Gras, 2001 – synonym: Haliotis patamakanthini

** Haliotis rubra conicopora Péron, 1816 – synonym: Haliotis conicopora – the conical pore abalone

** Nuclear testing: In the first underwater test of the atomic bomb, the surplus USS Saratoga is sunk near Bikini Atoll in the Pacific Ocean, when the United States detonates the Baker device during Operation Crossroads.

** Underwater habitat, a fixed underwater structure in which people can live for extended periods and carry out most of the basic human functions of a 24-hour day, such as working, resting, eating, attending to personal hygiene, and sleeping.

** Maurice Fernez introduces a simple lightweight underwater breathing apparatus as an alternative to helmet diving suits.

** The first known underwater diving club in Britain, " The Amphibians Club ", is formed in Aberdeen by Ivor Howitt ( who modified an old civilian gas mask ) and some friends.

** After World War II Lambertsen called his 1940-1944 rebreather LARU ( for Lambertsen Amphibious Respiratory Unit ) but as of 1952 Lambertsen renamed again his invention and coins the acronym SCUBA ( for " self-contained underwater breathing apparatus ").

** USS Triton completes the first ever underwater circumnavigation of the world.

** Scuba diving, in which a diver uses a scuba set to breathe underwater

** To let frogmen communicate underwater.

** Be less easily knocked off underwater.

** Be much less easily lost if the frogman goes unconscious underwater.

** Recovering underwater objects.

** Remotely operated underwater vehicle

** Light signals-Made using an underwater torch at night.

** Sign language Divers who are familiar with a sign language such as American sign language and equivalents may find it useful underwater, but there are limitations due to the difficulty of performing some of the gestures intellibly underwater with gloved hands and often while trying to hold something.

** After suffering heavy damage during the airstrikes of July 24, 28, and 29, the Japanese aircraft carrier Kaiyo is abandoned in Beppu Bay when she lists far enough for the port side of her flight deck to be underwater.

** Sabre-toothed blenny, Aspidontus taeniatus, a variety of fish that lives deep underwater in the benthic zone

** Indoor sports include: aerobics, underwater hockey, bodybuilding ( NMMU has an on campus gym and its own Biokinetics & Sport Science Unit / Centre ), indoor swimming, boxing, chess, dance, judo, karate, pool, squash and table tennis.

** The Loop-Essentially an Eskimo roll performed underwater.

** Like the SRT, the HRT is used primarily by the DART unit, and carries specialised equipment catering to uncommon or major incidents, such as structural collapses and underwater rescue.