However drilling a well is an uncertain activity, with aquifers depleted in some areas.

However, the details of the story are at best uncertain ( see for discussion of the original Wolfgang Sartorius von Waltershausen source and the changes in other versions ); some authors, such as Joseph Rotman in his book A first course in Abstract Algebra, question whether it ever happened.

However the overall proportion of stars with planets is uncertain because not all planets can yet be detected.

However, the fall of the Prodi government a few days after the publication of this article has left the future of Italy-Pacific Islands relations potentially uncertain.

However, his use, or even knowledge, of the Gospel of John is uncertain.

However, the exact date of the poem is uncertain because Coleridge normally dated his poems but did not date Kubla Khan.

However, sceptics argued that the orbits of the comets involved were still too uncertain to produce meaningful results.

However, in the natural world electrons normally remain in an uncertain, non-deterministic, " smeared ", probabilistic wave – particle wavefunction orbital path around ( or through ) the nucleus, defying classical electromagnetism.

However, the wave packet will also spread out as time progresses, which means that the position becomes more uncertain with time.

However, his birth date is still uncertain, as suggestions range from 462 to 512.

However, it appears that some contemporary and later writers, such as the Christian author Lactantius, and Sextus Aurelius Victor ( who wrote about fifty years later and from uncertain sources ), misunderstood the Tetrarchic system in this respect, believing it to have involved a stricter division of territories between the four emperors.

However, after the Tempe debacle, it was uncertain whether the Spartans would be willing to march out from the Peloponnesus again.

However, it is uncertain as to what extent the Convention codifies customary international law.

However, Vega may be much older than this group, so the membership remains uncertain.

However, outward migration rates of around 1. 5 % or more have been experienced for over a decade, therefore actual population changes are uncertain.

However, there is no evidence of the existence of any similar Arab dishes from that period ; though the Arabic mahallabīyah is similar, its origins are uncertain.

However, his rule remained uncertain, varying between idleness and cruel measures as in the case of John of Nepomuk.

However, historical records about its origin remain uncertain.

However, as Voyager only imaged 40 % of Triton's surface, this remains uncertain.

However, the conclusion that Kidinnu is the main creator of System B is uncertain.

However, this classification is somewhat uncertain since we can only infer how our galaxy would appear to an outside observer.

However, this might be seen as merely saying that rigorously proven results are overemphasized, and then " look how chaotic and uncertain the rest of it all is!

However it is uncertain which group of sponges is closest to Eumetazoa, as both calcareous sponges and a subgroup of demosponges called Homoscleromorpha have been nominated by different researchers.

However, it is uncertain exactly when in this period the site was inhabited.

However, their accuracy for the earliest period is uncertain, and a much debated topic among modern historians.

However, if the excited atom has been previously ionized, in particular if one of its inner shell electrons has been removed, a phenomenon known as the Auger effect may take place where the quantity of energy is transferred to one of the bound electrons causing it to go into the continuum.

However, Amesbury in Wiltshire is in a different dialect region and does not easily fit into the pattern of the Midland dialect place names.

However, Ayub Khan, one of Sher Ali Khan's sons, marched upon that city from Herat, defeated Abdur Rahman's troops, and occupied the place in July 1880.

However, regular church services still take place.

However, very few prototypes have been located, due to Tramiel Atari ’ s reluctance to make them in the first place.

However the windows in the tower seem to have been little more than slots, making them poor at letting light in, but providing a suitable place to view out.

However, Bede, like Gregory the Great whom Bede quotes on the subject in the Historia, felt that faith brought about by miracles was a stepping stone to a higher, truer faith, and that as a result miracles had their place in a work designed to instruct.

However, unlike Hollywood, Bollywood does not exist as a physical place.

However, technologists such as Bill Joy have warned of the potential power which genetic engineering might place in the hands of future bio-terrorists.

However, owing to project delays, groundbreaking took place in March 1985, almost two years late.

However, there is a ( perhaps allophonic ) difference in articulation between these segments, with the in yes and yield and the of wooed having more constriction and a more definite place of articulation than the in boil or bit or the of.

However, the collapse of the Near Eastern trading system pointed to a flaw: in an era where there was no place that was safe to store value, the value of a circulating medium could only be as sound as the forces that defended that store.

However, due to differing levels of celebrity in different regions, it is difficult to place people within one bracket.

" However, the locus of the celebrations is the national capital, Ottawa, Ontario, where large concerts and cultural displays are held on Parliament Hill, with the governor general and prime minister typically officiating, though the monarch or another member of the Royal Family may also attend or take the governor general's place.

However, that would be the only time during that season that the club would have a record over. 500, finishing at 53 – 64 and in last place in the National League West in the strike-shortened season.

However, the team faded in the second half and wound up at 76 – 86, tied for fourth place in the division.

However: intake valve closure ( sealing the cylinder ) always takes place after BDC, which may cause some of the intake charge to be compressed backwards out of the cylinder by the rising piston at very low speeds ; only the percentage of the stroke after intake valve closure is compressed.

However, depending on the operating system, a context switch may also take place at this time.

However maddening to later scholars searching for Camelot's location, its imprecise geography serves the romances well, as Camelot becomes less a literal place than a powerful symbol of Arthur's court and universe.

However, the combined HP-Compaq struggled and fell to second place behind Dell from 2003-2006.

However, in the original article on Young from the first edition of the Rolling Stone Illustrated History of Rock and Roll and a subsequent article in the 1983 Rolling Stone Record Guide, critic Dave Marsh used this album to accuse Young of deliberately manufacturing a self-mythology, arguing that while his highlights could be seen to place him on a level with other artists from his generation like Bob Dylan or The Beatles, the particulars of his catalogue did not bear this out.

However, whether this is possible depends on how the field of complex numbers is derived in the first place: it may not be possible to distinguish a complex number from its conjugate ( say, 3 + i from 3-i ), since it is impossible to find a property of one that is not also a property of the other, without falling back on the underlying set-theoretic definition.

However, the burial place of the Bohemian princess is now considered to be unknown.

However after the National Referendum that took place on the 5th of May in 2011, the proposition impulsed by the government of Mr. Correa won and now the Judiciary Council change its formation making a constitutional amendment.

However, electrolysis requires an external source of electrical energy to induce a chemical reaction, and this process takes place in a compartment called an electrolytic cell.