** Cryogenic storage dewars, specialised types of vacuum flask used for storing cryogenic fluids

** Aerosol assisted CVD ( AACVD ) – A CVD process in which the precursors are transported to the substrate by means of a liquid / gas aerosol, which can be generated ultrasonically.

** Direct liquid injection CVD ( DLICVD ) – A CVD process in which the precursors are in liquid form ( liquid or solid dissolved in a convenient solvent ).

** Buttermilk, the liquid left over after producing butter from cream, often dried as livestock feed

** Whey, the liquid drained from curds and used for further processing or as a livestock feed

** Oxyliquits: Mixtures of organic materials and liquid oxygen.

** Ionic liquid, a liquid that essentially contains only ions

** Ionic transfer, the transfer of ions from one liquid phase to another

** liquid – water

** Data sent from the Galileo probe indicates that Jupiter's moon Europa has a liquid ocean under a thick crust of ice.

** 2, 642 liquid gallons or 85 beer barrels or 63 oil barrels in U. S. customary units for liquid volumes

** 26, 417 liquid gallons or 852 beer barrels or 629 oil barrels in U. S. customary units for liquid volumes

** 264, 172 liquid gallons or 8, 522 beer barrels or 6, 290 oil barrels in U. S. customary units for liquid volumes

** 2, 641, 721 liquid gallons or 85, 217 beer barrels or 62, 898 oil barrels in U. S. customary units for liquid volumes

** Filmwise condensation is when a liquid film is formed on the subcooled surface, and usually occurs when the liquid wets the surface.

** Dropwise condensation is when liquid drops are formed on the subcooled surface, and usually occurs when the liquid does not wet the surface.

** Air fans ( hovercraft, air boat )

** Automobile air conditioning, air conditioning in a vehicle

** Solar air conditioning, air conditioning using solar power

** Ice storage air conditioning, air conditioning using ice storage

** Atmospheric dispersion modeling, mathematical simulation of how air pollutants disperse in the ambient atmosphere

** Diego and Jaquez in The Castle of Otranto – they appear to talk about random things, and argue foolishly with each other in order to lighten the air of the novel.

** Decreased concentration of oxygen in inspired air.

** In the Star Trek: Enterprise episodes " Demons " and " Terra Prime " ( both 2005 ) it is revealed that Mars is in the process of being terraformed by use of the Verteron array which redirects comets to crashland on the planet's surface ; by 2155 the atmosphere had been sufficiently altered so that, in the lowlands, Humans could breathe the air unassisted, though temperatures were still cold enough to require thermal gear.

** Republic Airlines, a regional air carrier affiliated with US Airways

** Compressed air energy storage ( CAES )

** The terrestrial region, according to Aristotle, consisted of concentric spheres of the four elements — earth, water, air, and fire.

** The open flute family, in which the player's lips form a stream of air that goes directly from the players lips to the edge, such as transverse flutes and end-blown flutes.

** The closed flute family, in which the musical instrument has a channel to form and direct the air stream over an edge.

** Bertrand Piccard and Brian Jones become the first to circumnavigate the Earth in a hot air balloon.

** NATO launches air strikes against the Federal Republic of Yugoslavia.

** In 1999, the North Atlantic Treaty Organization ( NATO ) led by the United States launched air attacks against Yugoslavia ( then composed of only Serbia and Montenegro ) to pressure the Yugoslav government to end its military operations against ethnic Albanian separatists in Kosovo due to accusations of war crimes being committed by Yugoslav military forces working alongside nationalist Serb paramilitary groups.

** An air crash in Indonesia ( likely caused by smoke rising from numerous forest fires in the area ) kills 235 people ( see Garuda Indonesia Flight 152 ).

** The Japanese Navy launches an air raid on Trincomalee in Ceylon ( Sri Lanka ); the Royal Navy aircraft carrier and Royal Australian Navy destroyer are sunk off the country's East Coast.

** ( 12: 30 a. m .) – B-17 Flying Fortress air crash near Auckland.

** Carole Lombard, American actress ( air crash ) ( b. 1908 )

** WWII: The British House of Commons is damaged by the Luftwaffe in an air raid.

** Ecosystems: biodiversity — biome — habitat — plankton — thermocline — carbon cycle — water cycle — nitrogen cycle — food web — trophic level — saprobe — decomposition

** High nitrogen materials tend to be green ( or colorful, such as fruits and vegetables ) and wet.

** Liquid nitrogen

** propellant: cold gas ( nitrogen )

** Creatinine, urea / blood urea nitrogen, sodium, potassium, chloride, bicarbonate, calcium, magnesium, phosphate

** Dihydrohydrooxycodeinone ( of which the substance registered under the name of eucodal is a salt ), dihydrocodeinone ( of which the substance registered under the name of dicodide is a salt ), dihydromorphinone ( of which the substance registered under the name of dilaudide is a salt ), acetyldihydrocodeinone or acetyldemethylodihydrothebaine ( of which the substance registered under the name of acedicone is a salt ); dihydromorphine ( of which the substance registered under the name of paramorfan is a salt ), their esters and the salts of any of these substances and of their esters, morphine-N-oxide ( registered trade name genomorphine ), also the morphine-N-oxide derivatives, and the other pentavalent nitrogen morphine derivatives.

** Argon with 2 – 5 % nitrogen and 2 – 5 % CO < sub > 2 </ sub > in short-circuiting yields good weld shape and color and increases welding speed.

** The identification of the obligate anaerobe Clostridium pasteurianum capable of fixing atmospheric nitrogen and living in legume root nodules.

** Non-flammable and non-toxic, likely to cause asphyxiation ( e. g. nitrogen, CO < sub > 2 </ sub >) or oxidisers ( e. g. oxygen )