However, air observers have been use since the beginning of indirect fire and were quickly joined by air photography.

However, they are now increasingly of low-floor design and optionally also ' kneel ' air suspension and have electrically or hydraulically extended under-floor ramps to provide level access for wheelchair users and people with baby carriages.

However since the Second World War land or sea battles have come to rely on air support.

However, unless the airflow is adjusted as well, the flame temperature will decrease because an increased amount of gas is now mixed with the same amount of air, starving the flame of oxygen.

However, its use in terrestrial applications is usually limited by its high reactivity with air.

However, it does suffer from nitrogen embrittlement, reacting with nitrogen from air and forming brittle nitrides at the high temperatures necessary to work the metal parts.

However, Empedocles of Acragas ( c. 495-c. 435 BC ) selected four archai for his four roots: air, fire, water and earth.

However, water conducts sound better than air, so the external ear is unneeded: it is a tiny hole in the skin, just behind the eye.

However when combined with land mines, snipers, barbed wire, and air cover, crossfire became a difficult tactic to counter in the early 20th century.

However, in scuba diving, nitrox is normally differentiated and handled differently from air.

However, some flutes, such as the whistle, gemshorn, flageolet, recorder, tin whistle, tonette, fujara, and ocarina have a duct that directs the air onto the edge ( an arrangement that is termed a " fipple ").

However in 1946, when Sir Miles Clifford arrived as governor, there were no air services, no roads outside Stanley and an indifferent sea service.

However, external services continued to be supplied almost exclusively by foreign airlines until Guyana Airways Corporation commenced regional air services in 1979.

However, it tarnishes quickly in moist air, forming a loosely adhering gadolinium ( III ) oxide ( Gd < sub > 2 </ sub > O < sub > 3 </ sub >), which spalls off, exposing more surface to oxidation.

However, it reacts with water and rusts readily, and will also burn in air when heated.

However, the court players may catch and touch the ball in the air within it as long as the player starts their jump outside the zone and releases the ball before they land ( landing inside the perimeter is allowed in this case as long as the ball has been released ).

However if the region of air breakdown extends to another conductor at a different voltage it will create a conductive path between them, and a large current will flow through the air, creating an " electric arc ".

However, when exposed to moist air at room temperature, lanthanum oxide forms a hydrated oxide with a large volume increase.

However, Luftstreitkräfte, or " air armed force ", is also sometimes used as a translation of " air force ".

However, this does not take into the account that Germany's economic situation suffered from limited resources – mainly raw materials like oil and aluminium – which did not provide for much beyond a tactical air force.

However, since no equipment existed to show the images in motion, such a series of images cannot be called animation in a true sense of the word .< ref >

However, there is an interesting contrast between the belief that exposure of signs to a hearing infant will aid them in language development, whereas a deaf infant at times must show the inability to learn an oral language before they are taught sign language.

However, the temple of Ares to which he refers had only been moved from Acharnes and re-sited in the Agora in Augustus's time, and statues known to derive from Alcamenes ' statue show the god in a breastplate, so the identification of Alcamenes ' Ares with the Ares Borghese is not secure.

However, he does not immediately show what this principle might be.

Thus there are alignments in all directions which would suggest there is little of astronomical significance, However, ethnohistorical records show that the various directions do have cosmological and astronomical significance with various points in the landscape being significant at different times of the year.

However, Medieval and later drawings often show it with two or more scaled feet, particularly chicken feet, and feathered wings.

However, response to the company's products at the CP / M-82 show in San Francisco showed that a U. S. company would be needed to reach the American market.

However, the CRTC is also sometimes erroneously criticized for CBSC decisions — for example, the CRTC was erroneously criticized for the CBSC's decisions pertaining to the airing of Howard Stern's terrestrial radio show in Canada in the late 1990s, as well as the CBSC's controversial ruling on the Dire Straits song " Money for Nothing ".

However, the best modern analysis of the sources of the creed ( by A. de Halleux, in Revue Theologique de Louvain 7, 1976 ) and a reading of the acts, or proceedings, of the council ( recently translated into English ) show that the bishops considered Cyril the great authority and that even the language of ' two natures ' derives from him.

However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic dissimilarity between Marmota and Spermophilus.

However, the show was never picked up for a series.

However, as discussed below, many of his letters show he was fairly open to the idea of evolution.

However, some patients fail to show any significant improvement from TMS which indicates the need for further research of this treatment.

However, his relatives were not major court officials ; documents show that El Cid's paternal grandfather, Lain, confirmed only five documents of Ferdinand I's, his maternal grandfather, Rodrigo Alvarez, certified only two of Sancho II's, and El Cid's own father confirmed only one.

However, one can show that ( EF2 ) is superfluous in the following sense: any domain R which

However, D. W. Griffith only used them in a theatrical situation, to show what the audience in a theatre were looking at, as did European film-makers.

However, the usual way to show the link with the House of Orange-Nassau is the orange pennant above the red-white-blue.

However, data now show that while people of East Asian origin may often have smaller bodies, they tend to have larger brains and higher IQs than average whites.

However, Burney's edition does not show the ornamentation for which the work was famous.

However simple examples such as the indiscrete topological space show that not all topological spaces can be expressed using Grothendieck topologies.

However, the show usually closed with a gospel song — if not by the Quartet, then by the entire cast.

However, comparison with a rocket vehicle using similar construction techniques failed to show much advantage, and funding for the vehicle ceased.

However, 2 + ions ( Be < sup > 2 +</ sup >) or even 1 + ( Li < sup >+</ sup >) show some polarizing power because their sizes are so small ( e. g., LiI is ionic but has some covalent bonding present ).

However, our understanding of the molecular mechanisms behind genomic imprinting show that it is the maternal genome that controls much of the imprinting of both its own and the paternally-derived genes in the zygote, making it difficult to explain why the maternal genes would willingly relinquish their dominance to that of the paternally-derived genes in light of the conflict hypothesis.