This allows you to enjoy a powerful stream of ground-level air as well as a secondary current of air blowing toward the ceiling.
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At 42-inches tall, the FH500 creates a huge current of air that's tall enough to cover over most furniture and will keep you cooler in bed.
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This shape is great for space-saving, but it also allows a tower fan to create a larger current of air than what most traditional circular-shaped fans can manage.
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The jet stream that helped propel the plane is the fast-moving current of air at upper levels of the atmosphere that plays a key role in separating air masses and spawning storms.
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Here, "fuenftermaizweitausendundelf" is installed near a kinetic relief sculpture, "Big Mind Sky" (2007), which consists of a metal keyhole, seemingly from an old, over-sized door, set into the wall, from which a current of air blows.
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Experts have said the angle of attack is a crucial parameter that helps the aircraft's computers understand whether its nose is too high relative to the current of air - a phenomenon that can throw the plane into an aerodynamic stall and make it fall.
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For much of the week, the jet stream — the fast-moving current of air at the top of the troposphere, where jetliners cruise — has carved a path that has directed two atmospheric rivers into the U.S. The first has steered badly needed rain and mountain snow to drought-plagued California.
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If placed in a current of air in the sun, a fly completely under the influence of coniine may recover.
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Prepared on the large scale by heating a mixture of manganic peroxide and sodium hydrate to redness in a current of air.
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The wet bulb temperature in any working place does not exceed 33.5°C and where the wet bulb temperature exceeds 30.5°C arrangements are made to ventilate the same with a current of air moving at a speed of not less than one metre per second.
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Pliny, Natural history, 33.33; W.H.S. Jones, the Loeb Classical Library translator, supplies a note suggesting the identifications. The Greek naturalist Pedanius Dioscorides mentioned that antimony sulfide could be roasted by heating by a current of air. It is thought that this produced metallic antimony. The Italian metallurgist Vannoccio Biringuccio described a procedure to isolate antimony.
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The owner had tried to introduce Mueseler lamps (which withstand a greater current of air) but the men had resisted them since they gave a poorer light. The six lamps found near the seat of the explosion were tested. All passed, but some were slightly damaged and three were unlocked. The inspector reported that the mine management was somewhat deficient.
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The most basic technique of using a party streamer is to take the streamer and pull it out of its roll. A less known technique is to blow inside the roll, making the streamer flow out on the current of air. You can also cut across the roll and use the resulting pieces as confetti. There exist party streamer guns that aid in deploying party streamers.
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Traditionally, pig iron was worked into wrought iron in finery forges, later puddling furnaces, and more recently, into steel.R. F. Tylecote, A history of metallurgy (2nd edition, Institute of Materials, London, 1992). In these processes, pig iron is melted and a strong current of air is directed over it while it is stirred or agitated. This causes the dissolved impurities (such as silicon) to be thoroughly oxidized.
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This mixture is then heated until the top melts, allowing for the oxides to begin mixing; this usually takes 30 minutes. This mixture is subjected to a strong current of air and stirred by long bars with hooks on one end, called puddling bars or rabbles,W. K. V. Gale, The Iron and Steel Industry: a Dictionary of Terms (David and Charles, Newton Abbot 1971), 165. through doors in the furnace.
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This he does in the open air. He obtains the > required temperature by means of a steam coil running around his evaporating > pan, which is of the ordinary circular form. This heat will not boil the > liquor, of course; that he accomplishes by menus of a perforated pipe or > coil coming in at the bottom of the evaporating pan. Through this latter > coil, a current of air is forced by a fan blast.
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The glass was surrounded by gauze so that in the event of a glass breakage the Geordie became a Davy. In a strong enough current of air enough air could be forced in through the tubes (later holes and gallery) to enlarge the flame and the lamp could get red-hot. The lamp becomes unsafe in a current of from 8 to 12 feet per second, about twice that of the Davy.
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The first explosion causing large numbers of deaths at Black Vein was in January 1846. Local newspapers reported that around 150 men were working in different sides of the mine workings, but the explosion only affected one area. Miners working elsewhere were not aware of any noise but just felt a strong current of air. 35 were killed; 4 burned, 30 suffocated and 1 was hit by a carriage at the bottom of the shaft.
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Thomson also reports this but warns against too early an assumption, mentioning other possibilities such as the failure of a stopping or furnace mismanagement. The southern boards were crossed by several fissures (dykes) from which periodic discharges of gas came through apertures called blowers. The blowers could make "the coals on the floor dance round their orifices, like gravel in a strong spring". The discharges were dealt with by the strong current of air, strong enough to extinguish candles.
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As well as the human cost, eighteen horses were killed either by the explosion or by the afterdamp. One of the survivors, Peter Gibbon, saw from his safety lamp that the air quality had changed. He commented to the man he was working with, George Chapman, "Do ye mind what a current of air there was!". Chapman had not noticed anything, but being at that time in charge of the pit he went off to investigate.
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Boston Patriot; Date: 03-01-1815; p.2. He added gas lighting in 1817; and in 1819 upgraded the bars ("the different bar rooms are more commodious") and built an amphitheatre.Boston Intelligencer & Evening Gazette; Date: 06-19-1819; p.2. > The new amphitheatre is a neat brick building of one story, with numerous > large venetian windows, the wide spaces of which admit a current of air ... > so that as much coolness is secured within as even in summer can be > desirable.
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Upon his return, the Royal Swedish Academy of Sciences gave him a sum of 50,000 Swedish crowns for financing steel production using the Bessemer process. The Bessemer method involved blasting a strong current of air through molten iron to burn off the carbon and other impurities. However, it proved difficult to keep the temperature high enough throughout the process. After initial difficulties, Göransson successfully managed to produce steel on an industrial scale using the new process on 18 July 1858.
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On the Wednesday Mr Straker and William Haswell (the viewer and the overman) descended John Pit. The sparks from the Spedding mill were extinguished by the blackdamp and Haswell began staggering within due to the effects of the gas. Straker helped him to the shaft where it was still difficult to breathe even in the current of air. Two further men descended but could not move more than a few yards from the base of the shaft and their clothes had the smell of stinkdamp upon them.
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Some zinc ores concentrates from sulfidic zinc ores contain up to 1.4% of cadmium. Cadmium is isolated from the zinc produced from the flue dust by vacuum distillation if the zinc is smelted, or cadmium sulfate is precipitated out of the electrolysis solution. The richest mercury ores contain up to 2.5% mercury by mass, and even the leanest concentrated deposits are at least 0.1% mercury, with cinnabar (HgS) being the most common ore in the deposits. Mercury is extracted by heating cinnabar in a current of air and condensing the vapor.
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85-95, on p. 86 A report released in 2012 found a close relationship between the deaths of bees and the use of pneumatic drilling machines for the sowing of corn seeds coated with clothianidin and other neonicotinoid insecticides. In pneumatic drilling machines, seeds are sucked in, causing the erosion of fragments of the insecticide shell, which are then expelled with a current of air. Field tests found that foraging bees flying through dust released during the planting of corn seeds coated with neonicotinoid insecticides may encounter exposure high enough to be lethal.
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That would be done in a refinery where raw coal was used to remove silicon and convert carbon within the raw material, found in the form of graphite, to a combination with iron called cementite. In the fully developed process (of Hall), this metal was placed into the hearth of the puddling furnace where it was melted. The hearth was lined with oxidizing agents such as haematite and iron oxide. The mixture was subjected to a strong current of air and stirred with long bars, called puddling bars or rabbles, through working doors.
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The wind mobiles featured abstract shapes delicately balanced on pivoting rods that moved with the slightest current of air, allowing for a natural shifting play of forms and spatial relationships.Alexander Calder, Ghost (1964) Philadelphia Museum of Art. Calder was also experimenting with self-supporting, static, abstract sculptures, dubbed "stabiles" by Jean Arp in 1932 to differentiate them from mobiles. In 1935–1936, he produced a number of works made largely of carved wood. At Exposition Internationale des Arts et Techniques dans la Vie Moderne (1937), the Spanish pavilion included Calder's sculpture Mercury Fountain.
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Former mines in Italy, the United States and Mexico, which once produced a large proportion of the world supply, have now been completely mined out or, in the case of Slovenia (Idrija) and Spain (Almadén), shut down due to the fall of the price of mercury. Nevada's McDermitt Mine, the last mercury mine in the United States, closed in 1992. The price of mercury has been highly volatile over the years and in 2006 was $650 per 76-pound (34.46 kg) flask. Mercury is extracted by heating cinnabar in a current of air and condensing the vapor.
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Two inch port tube installed in the top of a Polk S10 speaker cabinet as part of a DIY audio project. This port is flared. Unlike closed-box loudspeakers, which are nearly airtight, a bass reflex system has an opening called a port or vent cut into the cabinet, generally consisting of a pipe or duct (typically circular or rectangular cross section). The air mass in this opening resonates with the "springiness" of the air inside the enclosure in exactly the same fashion as the air in a bottle resonates when a current of air is directed across the opening.
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To minimise the risk of explosion, and electric blower was installed at the Depot, and was started up every morning before the first car left the Depot, and this blew a current of air through the conduit, clearing it of any gas. The other main problem with the stud system, was the requirement to have a large magnetic contact under the tramcar to activate the studs. These magnetic contacts would collect any metal based debris (horse shoes etc.) left on the road surface. This occasionally caused a dead short, actuating the circuit breakers at the Brayford Power station, and bringing all cars to a halt.
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In his Introduction to the 1964 book Meditations, the Anglican priest Maxwell Staniforth discussed the profound impact of Stoicism on Christianity. In particular: > Another Stoic concept which offered inspiration to the Church was that of > "divine Spirit". Cleanthes, wishing to give more explicit meaning to Zeno's > "creative fire", had been the first to hit upon the term pneuma, or > "spirit", to describe it. Like fire, this intelligent "spirit" was imagined > as a tenuous substance akin to a current of air or breath, but essentially > possessing the quality of warmth; it was immanent in the universe as God, > and in man as the soul and life-giving principle.
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In his Introduction to the 1964 book Meditations, the Anglican priest Maxwell Staniforth discussed the profound impact of Stoicism on Christianity. In particular: > Another Stoic concept which offered inspiration to the Church was that of > 'divine Spirit'. Cleanthes, wishing to give more explicit meaning to Zeno's > 'creative fire', had been the first to hit upon the term pneuma, or > 'spirit', to describe it. Like fire, this intelligent 'spirit' was imagined > as a tenuous substance akin to a current of air or breath, but essentially > possessing the quality of warmth; it was immanent in the universe as God, > and in man as the soul and life-giving principle.
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Strong surface winds directed equatorward along the east side of the Antarctic Peninsula can appear in two different types of synoptic- meteorological situations: an intense cyclone over the central Weddell Sea, a broad east to west flow of stable cold air in the lowest 500-to-1000-metre layer of the atmosphere over the central and/or southern Weddell Sea toward the peninsula. These conditions lead to cold air piling up on the east edge of the mountains. This process leads to the formation of a high-pressure ridge over the peninsula (mainly east of the peak) and, therefore, a deflection of the originally westward current of air to the right, along the mountain wall.
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In his report Haldane stated: Report to the Home Secretary on the Circumstances attending the Underground Fire at the Snaefell Lead Mine in the Month of May 1897, by C. Le Neve Foster, Esq., D.Sc., F.R.S., one of H.M. Inspectors of mines The reason for the continued presence of the gas in the lower parts of the mine was found during a further investigation by Sir Clement Le Neve Foster. Snaefell Mine consisted of a single working shaft mine, and in addition there was a wooden upcast shaft which followed the slope of Snaefell Mountain in order to assist ventilation. The current of air to this shaft, so as to clear the bottom (171 fathom) level, was arranged by closing of doors opening on to shafts from the higher levels.
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The phenomenon was subsequently studied by German glider pilot and atmospheric physicist Joachim P. Küttner (1909 -2011) in: Küttner, J. (1938) "Moazagotl und Föhnwelle" (Lenticular clouds and foehn waves), Beiträge zur Physik der Atmosphäre, 25, 79–114, and Kuettner, J. (1959) "The rotor flow in the lee of mountains." GRD [Geophysics Research Directorate] Research Notes No. 6, AFCRC[Air Force Cambridge Research Center]-TN-58-626, ASTIA [Armed Services Technical Information Agency] Document No. AD-208862. They are periodic changes of atmospheric pressure, temperature and orthometric height in a current of air caused by vertical displacement, for example orographic lift when the wind blows over a mountain or mountain range. They can also be caused by the surface wind blowing over an escarpment or plateau, or even by upper winds deflected over a thermal updraft or cloud street.
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On his return to Newcastle, Richardson became a specialist in manufacturing chemistry, taking out a number of patents for processes. In 1840 he began, at Blaydon, near Newcastle, to remove the impurities, consisting chiefly of antimony, from "hard" lead, and thus to convert it into "soft" lead, by means of a current of air driven over the molten metal; the impurities were oxidised, floated to the surface, and were then skimmed off. Practical improvements introduced into the process by George Burnett soon after led to the annual importation of several thousand tons of Spanish hard lead into the Tyne district, where it was purified. John Percy brought forward evidence that Richardson was not the inventor of this process, quoting a letter from James Leathart, and stating that a patent for it was granted to Walter Hall in 1814.
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Some believe that this can be seen in Paul's formulation of the concept of the Holy Spirit that unites Christians in Jesus Christ and love for one another, but Konsmo again thinks that this position is difficult to maintain. In his Introduction to the 1964 book Meditations, the Anglican priest Maxwell Staniforth wrote: > Another Stoic concept which offered inspiration to the Church was that of > "divine Spirit". Cleanthes, wishing to give more explicit meaning to Zeno's > "creative fire", had been the first to hit upon the term pneuma, or > "spirit", to describe it. Like fire, this intelligent "spirit" was imagined > as a tenuous substance akin to a current of air or breath, but essentially > possessing the quality of warmth; it was immanent in the universe as God, > and in man as the soul and life-giving principle.
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The airline's flight superintendent discussed the altimeter, discounted the suggestions of the two surviving passengers as lacking experience to determine the aircraft's flying height, and believed the crash cause was 'an abnormal down current of air'. The coroner Mr J. J. Leahy, while not empowered under the statute to make any findings, noted the airline company had a very good and comforting flying record, 'tragic fatalities should be awaited to provide generating reasons for the institution of improvements to safeguard human life', and the authorities if studying the evidence presented to the inquiry, :should be possible to draw soundly-based conclusions pointing to the pressing need for improved methods of ground organisation, centralised control, and supervision at the aerodrome of pilots and their duties, the supply of up-to-the-minute weather reports on air routes, the establishment of reporting stations, and the utilisation to the fullest extent of radio aids.
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Following the loss of several ships in a storm off the coast of East Anglia on 31 October 1789, there was pressure on lighthouse owners to make improvements to their lights. At Cromer, the decision was taken to fit the tower with oil-fired Argand lamps and parabolic reflectors, in place of the coal-fired brazier. These lamps were something of a novelty, Aimé Argand having only recently perfected his eponymous cylindrical-wick lamp (which provided a central current of air through the burner to ensure a more perfect combustion of the gas issuing from the wick); their use in lighthouses worldwide would soon become near- universal.Wolfe, John J. Brandy, Balloons, & Lamps: Ami Argand, 1750-1803 When lit anew on 8 September 1792, Cromer became only the second lighthouse in England (after St Agnes in 1790) to display a revolving, flashing light - a novelty which is said to have provoked irritation among seamen at the time.
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Sulfur dioxide is generated by burning elemental sulfur or by roasting pyritic ore in a current of air: :S8 \+ 8 O2 → 8 SO2 :4 FeS2 \+ 11 O2 → 2 Fe2O3 \+ 8 SO2 Nitrogen oxides are produced by decomposition of niter in the presence of sulfuric acid, or by hydrolysis of nitrosylsulfuric acid: :2 NaNO3 \+ H2SO4 → Na2SO4 \+ H2O + NO + NO2 \+ O2 :2 NOHSO4 \+ H2O → 2 H2SO4 \+ NO + NO2 In the reaction chambers, sulfur dioxide and nitrogen dioxide dissolve in the reaction liquor. Nitrogen dioxide is hydrated to produce nitrous acid, which then oxidizes the sulfur dioxide to sulfuric acid and nitric oxide. The reactions are not well characterized, but it is known that nitrosylsulfuric acid is an intermediate in at least one pathway. The major overall reactions are: :2 NO2 \+ H2O → HNO2 \+ HNO3 :SO2 (aq) + HNO3 → NOHSO4 :NOHSO4 \+ HNO2 → H2SO4 \+ NO2 \+ NO :SO2 (aq) + 2 HNO2 → H2SO4 \+ 2 NO Nitric oxide escapes from the reaction liquor and is subsequently reoxidized by molecular oxygen to nitrogen dioxide.
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