While his predecessors Thales and Anaximander proposed that the arche, the underlying material of the world, were water and the ambiguous substance apeiron, respectively, Anaximenes asserted that air was this primary substance of which all other things are made.

While the choice of air may seem arbitrary, he based his conclusion on naturally observable phenomena in the process of rarefaction and condensation .< ref > Guthrie, W. K. C.

While the sun is similarly described as being aflame, it is not composed of rarefied air like the stars but rather of earth like the moon ; its burning comes not from its composition but rather from its rapid motion .< ref > Kirk, G. S., J. E.

While the term — literally meaning " sailing the air "— originally referred solely to the science of operating the aircraft, it has since been expanded to include technology, business and other aspects related to aircraft.

While the Reno Air Races keep this tradition alive, most air shows today primarily feature a series of aerial demos of short duration.

If the air mass is colder than the ground below it, it is labeled k. If the air mass is warmer than the ground below it, it is labeled w. While air mass identification was originally used in weather forecasting during the 1950s, climatologists began to establish synoptic climatologies based on this idea in 1973.

* 1960 – 1960 New York air disaster: While approaching New York's Idlewild Airport, a United Airlines Douglas DC-8 collides with a TWA Lockheed Super Constellation in a blinding snowstorm over Staten Island, killing 134.

While in the FA Cup final against Manchester United, United were looking for their first trophy since the Munich air disaster of five years earlier which had claimed the lives of eight of the Busby Babes whom Banks had faced as an adolescent.

While laying the foundation stone of the National Defence Academy ( India ) in 1949, he stated: " We, who for generations had talked about and attempted in everything a peaceful way and practiced non-violence, should now be, in a sense, glorifying our army, navy and air force.

* While the theory correctly reasons that deflection implies that there must be a force on the wing, it does not explain why the air is deflected.

While many of the World Bank mission's recommendations were much argued both locally and internationally this proposal was widely accepted as it was clear that both political and economic advancement depended on greatly improved land, sea and air transport.

While one is working the land, the other is carried upside-down in the air.

While Gute Zeiten, schlechte Zeiten, Unter uns, Verbotene Liebe and Alles was zählt are currently the only daily soaps on the air, the telenovelas Sturm der Liebe and Rote Rosen are considered soaps by the press as well, thanks to the changing protagonists every season.

While pronking, the Springbok repeatedly leaps into the air in a particular stiff-legged posture, with its back bowed and the white fan lifted.

" While the details of the attack are disputed — Michigan claimed it fired no shots and had only discharged a few musket rounds in the air as the Ohio group retreated — the battle further infuriated both Ohioans and Michiganders and brought the two sides to the brink of all-out war.

While they suggest covering just a channel access method ( namely a variant of CDMA ), they are actually the common names for the whole air interface standards.

While the same rule generally applies in all jurisdictions, some countries such as Cuba and Russia have taken advantage of air rights on a national level to earn money.

While in the air, Skalbania worked on the deal.

While in the air the rider attempts to do tricks.

* February 27 – While trying to circumnavigate the world in a hot air balloon, Colin Prescot and Andy Elson set a new endurance record after being aloft for 233 hours and 55 minutes.

While Earth is considered " north "; Fire is " south "; air is " east "; Water is " west ", while Akasha is " center ".

While his wife convalesced in the cool ocean air, President Garfield brought his cabinet to Elberon for consultation and ran the government by telegraph.

While air force jets provided suppressive fire on the mountain top with individual gun runs since Mako 30 was less than north of the peak and Chalk 1 with its downed MH-47 was less than 100 m south of the peak.

While the pattern is uneven, some having gained more than others, nationalism has in fact served the Western peoples well.

While sovereignty has roots in antiquity, in its present usage it is essentially modern.

While The Space Merchants indicates, as Kingsley Amis has correctly observed, some of the `` impending consequences of the growth of industrial and commercial power '' and satirizes `` existing habits in the advertising profession '', its warning and analysis penetrate much deeper.

While all citizens share in blame for lax municipal ethics the Wagner regime has seen serious problems in the schools, law enforcement and fiscal policies.

While 2-year-olds are still gaining most of the attention at the track, green horses are starting to go a bit, and Jimmy Cruise has several that can really make it.

While many companies have done fine work in developing sales personnel, much of it has been product rather than sales training.

While the U. S. Department of Labor has a program of projecting industry and occupational employment trends and publishing current outlook statements, there is little tangible evidence that these projections have been used extensively in local curriculum planning.

While availability of mortgage money has been a factor in encouraging apartment construction, the generally high level of prosperity in the past few years plus rising consumer income are among the factors that have encouraged builders to concentrate in the apartment-building field.

While each scene has its own character and completeness it must fit into the general sequence to which it belongs.

While that national dichotomy has stymied any effort at changing the tradition of the national anthem, " America the Beautiful " continues to be held in high esteem by a large number of Americans.

) While Rotokas has a small alphabet because it has few phonemes to represent ( just eleven ), Book Pahlavi was small because many letters had been conflated — that is, the graphic distinctions had been lost over time, and diacritics were not developed to compensate for this as they were in Arabic, another script that lost many of its distinct letter shapes.

While the Ural – Altaic hypothesis can still be found in encyclopedias, atlases, and similar general references, it has not had any adherents in the linguistics community for decades.

While most everyone has an experience with anxiety at some point in their lives, as it is a common reaction to real or perceived threats of all kinds, most do not develop long-term problems with anxiety.

While authors such as Emmanuel Le Roy Ladurie, Marc Ferro and Jacques Le Goff continue to carry the Annales banner, today the Annales approach has been less distinctive as more and more historians do work in cultural history, political history and economic history.

While the 68000 family has a 32-bit design, the 68000 used in several early models is generally referred to as 16-bit.

While the civil market has had weather radar for a while, there are strict rules about using it to navigate the aircraft.

While AA has pamphlets that suggest meeting formats, groups have the autonomy to hold and conduct meetings as they wish " except in matters affecting other groups or A. A. as a whole ".

While tanks are seen as being integral to armoured warfare, in forces with a remit of power projection deployability has always been a consideration, which conventional main battle tanks cannot provide.

While an autobiography typically focuses on the " life and times " of the writer, a memoir has a narrower, more intimate focus on his or her own memories, feelings and emotions.

While paracetamol is usually taken orally or rectally, an intravenous preparation introduced in 2002 has been shown to improve pain relief and reduce opioid consumption in the perioperative setting.

While the use of paracetamol, aspirin, ibuprofen, naproxen and other NSAIDS concurrently with weak to mid-range opiates ( up to about the hydrocodone level ) has been said to show beneficial synergistic effects by combatting pain at multiple sites of action, several combination analgesic products have been shown to have few efficacy benefits when compared to similar doses of their individual components.

While this opinion has remained popular, other views have been expressed as well.

While not all these conclusions have been accepted, it has had an enduring influence on archaeoastronomy, especially in Europe.