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94 Sentences With "movement of air"

How to use movement of air in a sentence? Find typical usage patterns (collocations)/phrases/context for "movement of air" and check conjugation/comparative form for "movement of air". Mastering all the usages of "movement of air" from sentence examples published by news publications.

Air traffic controllers coordinate and direct the movement of air traffic.
The wall performs like a screen that allows for the movement of air.
Air traffic controllers coordinate the movement of air traffic to ensure that aircraft stay safe distances apart.
The flat, fertile plain where Delhi sits is bounded by the Himalayas, which block the movement of air.
He noticed that due to the movement of air inside the ball, the outside suffered more shock than the center.
Chao also noted there would be no physical movement of air traffic control assets, with the changes focused on governance and financial structure.
Using a schlieren optical system, which visualizes the movement of air around objects, they're able to see how a dog's nose pulls air in from its environment.
That data is fed into computer models that figure out where the storm might end up based on the movement of air and moisture in the atmosphere.
Hence the analogy: a butterfly flaps its wings in Asia and that little movement of air ultimately causes a hurricane on the other side of the world.
This study shows the downward movement of air over the ocean replenishes wind as it moves through the farm, which means ocean farms have a much higher energy cap.
In the United Kingdom, which only has 5,000 ventilators, vacuum cleaner kingpin Dyson — a company that does specialize in machines that regulate the movement of air — designed its own ventilator.
They can smell the time of day in the movement of air around a room; sense diabetic episodes hours in advance; and detect human emotional states in the absence of visual cues.
The last we heard from multimedia choreographers Adrien M and Claire B, they'd just released a video spot for The Movement of Air, in which dancers manipulated a variety of projection-mapped tornadoes, smoke columns, and floating papers.
Number of people employed in Hawaii:What they do,according to O*NET: Control air traffic on and within vicinity of airport and movement of air traffic between altitude sectors and control centers according to established procedures and policies.
This variability didn't matter so much in the past; but as the world's reliance on wind power increases, as it is projected to in years to come, forecasting the large-scale movement of air of will become far more important.
But instead of everyone living in sound-blocking caves in a few years as noisy drones criss-cross the skies, researchers at Boston University have engineered an acoustic metamaterial that's designed to silence annoying sounds at their source, without blocking the movement of air.
Producers might also try to address some of their concerns in the vineyard, through how they manage the canopy of leaves, which can be arranged not only to allow a steady movement of air, reducing susceptibility to diseases, but also to shade grapes from the sun or to permit more direct sunlight, affecting the rate at which the grapes ripen.
There have been a few clever innovations designed to make devices that move air sound more pleasant to the human ear—Dyson's bladeless fans and hair dryers come to mind—but researchers Reza Ghaffarivardavagh and Xin Zhang from Boston University have come up with a solution that outperforms them all, without impeding the actual movement of air which is what makes most sound blocking approaches impractical for products like cooling fans, or drones.
The Hudson Terminal station also used fans to accelerate the movement of air.
In vascular plants, pit membranes provide passage of water from one tracheary element to another but at the same time impede movement of air bubbles.
To produce any kind of sound, there must be movement of air. To produce sounds that people can interpret as spoken words, the movement of air must pass through the vocal cords, up through the throat and, into the mouth or nose to then leave the body. Different sounds are formed by different positions of the mouth—or, as linguists call it, "the oral cavity" (to distinguish it from the nasal cavity).
The movement of air through the cavity can be forced (by means of mechanical devices such as fans), or occur freely, by means of convection. Whether the air flow is free or forced can affect energy efficiency of the window.
Blown idiophones are idiophones set in vibration by the movement of air, for example the Aeolsklavier, an instrument consisting of several pieces of wood which vibrate when air is blown onto them by a set of bellows. The piano chanteur features plaques.
This is enhanced by differential air pressure caused by movement of air over the rough and smooth surfaces, which also tends to push the ball to the leg side. The result is that the ball curves, or swings in to the batsman.
The wind-pressure applied to an organ pipe affects its volume, pitch and character. Hauptwerk uses Fluid dynamics to model the movement of air through the various parts of a pipe-organ. This information is then used to modify the sampled sound.
Wind causes the generation of sound. The movement of air causes movements of parts of natural objects, such as leaves or grass. These objects will produce sound if they touch each other. Even a soft wind will cause a low level of environmental noise.
Juni 2015. The EXCOR system includes paracorporeal, pneumatically-driven polyurethane blood pumps. Each pump consists of a blood chamber and an air chamber which are separated by a multilayer flexible membrane. The movement of air in and out of the air chamber is controlled by a driving unit.
After the first spores have formed on the conidiophore, they bud apically to form secondary spores. They have pores connected in very fragile chains that can fall apart at the slightest movement of air, the spores are wind-dispersed and often extremely abundant in outdoor air under warm temperature.
Aeroacoustics is concerned with how noise is generated by the movement of air, for instance via turbulence, and how sound propagates through the fluid air. Aeroacoustics plays an important role in understanding how noise is generated by aircraft and wind turbines, as well as exploring how wind musical instruments work.
Cultivation, earthworms, frost action and rodents mix the soil and decreases the size of the peds. This structure allows for good porosity and easy movement of air and water. This combination of ease in tillage, good moisture and air handling capabilities, and good structure for planting and germination, are definitive of the phrase good tilth.
Cameras range from conventional single picture cameras to 'movie cameras' that take over 2 million pictures per second. Specialized optics, illuminations, and films are used to record images of things that the eye cannot see such as movement of air, surface temperature of objects, and stress patterns. Cameras can be used in environments where humans cannot go.
As the mutant Wind Dancer, Sofia had the ability to control the movement of air, which included the ability to generate wind with intense force, lift and carry objects, fly and, more subtly, amplify small vibrations in the air - allowing her to hear faraway conversations. She has also used her powers to create a "cutting" effect by refining the force of the wind.
Dancing honeybees (Apis mellifera) describe the location of nearby food sources by emitted airborne sound signals. These signals consist of rhythmic high-velocity movement of air particles. These near-field sounds are received and interpreted using the Johnston's organ in the pedicel of the antennae. Honeybees also perceive electric field changes via the Johnston's organs in their antennae and possibly other mechanoreceptors.
Lung compliance, or pulmonary compliance, is a measure of the lung's ability to stretch and expand (distensibility of elastic tissue). In clinical practice it is separated into two different measurements, static compliance and dynamic compliance. Static lung compliance is the change in volume for any given applied pressure. Dynamic lung compliance is the compliance of the lung at any given time during actual movement of air.
The difference of pressure caused by movement of air over the rough and smooth surfaces tends to push the ball to the left. The result is that the ball curves, or swings to the left. In case of a new ball point the seam to the direction of swing. The difference of the separation of air by the seam the ball moves away from the batsman.
A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs. A spirometer measures ventilation, the movement of air into and out of the lungs. The spirogram will identify two different types of abnormal ventilation patterns, obstructive and restrictive. There are various types of spirometers that use a number of different methods for measurement (pressure transducers, ultrasonic, water gauge).
Bhastrikā (pronounced bha-STRI-kaah), is an important breath exercise in yoga and pranayama. It is sometimes treated as a kriya or 'cleansing action' along with kapalabhati to clear the airways in preparation for other pranayama techniques. Bhastrika involves a rapid and forceful process of inhalation and exhalation powered by the movement of the diaphragm. The movement of air is accompanied by an audible sound.
Adults are capable of flying long distances, so even though they are unable to overwinter north of the southern region of the United States, the moths can migrate as far north as southern Canada in warm months. Their migration rate is remarkably fast, estimated at 300 miles per generation. Some scientists speculate that this fast migration is aided by the movement of air in weather fronts.
On warm windy days air is drawn in through passages in the curved hollow concrete floor slabs. Stack ventilation naturally rising out through the stainless steel chimneys enhances the air flow through the building. The movement of air across the chimney tops enhances the stack effect. During warm, still days, the building relies mostly on the stack effect while air is taken from the shady north side of the building.
Since sesame is a small, flat seed, it is difficult to dry it after harvest because the small seed makes movement of air around the seed difficult. Therefore, the seeds need to be harvested as dry as possible and stored at 6% moisture or less. If the seed is too moist, it can quickly heat up and become rancid. After harvesting, the seeds are usually cleaned and hulled.
Under trade wind conditions, there is very often a pronounced moisture discontinuity between . Below these heights, the air is moist; above, it is dry. The break (a large-scale feature of the Pacific High) is caused by a temperature inversion embedded in the moving trade wind air. The inversion tends to suppress the vertical movement of air and so restricts cloud development to the zone just below the inversion.
The scientist dissects his own brain and discovers that it operates based on the movement of air through tubes with small flaps of gold leaf acting as switches. The scientist hypothesizes that others' brains are computing slower because rising atmospheric pressure causes air to move the gold leaf at a slower rate, and that the subterranean supply of argon will eventually be depleted, equalizing the pressure between the two atmospheres.
Placed on the northern edge of the southern gingko tree grove, these four freestanding glass walls—now called "Voices of Veterans"—would not only contain quotations and other inscriptions but also photo-realistic images of disabled veterans. Each glass "wall" consisted of 17 or 18 panels, with each panel wide, high, and thick. A gap between each panel permitted the movement of air. About 30 quotations would be used.
Thermal stratification is the result of processes which layer the internal air in accordance with relative density. The resulting air stratum is a vertical gradient with high-density and cooler air below and low-density and warmer air above. Due to the naturally convective movement of air, stratification is used predominantly in cooling conditions. Air stratification capitalizes on thermal buoyancy to layer high quality supply air at occupant level and leave unoccupied air unconditioned.
The Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, flue gas stacks, or other containers due to buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences. The greater the thermal difference and the height of the structure, the greater the buoyancy force, and thus the stack effect. The stack effect helps drive natural ventilation and infiltration.
Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers, resulting from air buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences. The result is either a positive or negative buoyancy force. The greater the thermal difference and the height of the structure, the greater the buoyancy force, and thus the stack effect.
This movement of air from the north owing to the interaction between the Chaco Low and the South Atlantic high is the strongest in summer when the Chaco Low is at its strongest. These winds bring hot, humid tropical air from the north. Sustained and intense winds from the north are responsible for severe weather events such as heat waves and severe convection. During winter, the Chaco Low weakens as a result of lower insolation.
An idealised view of three pairs of large circulation cells. Atmospheric circulation is the large-scale movement of air through the troposphere, and the means (with ocean circulation) by which heat is distributed around Earth. The large-scale structure of the atmospheric circulation varies from year to year, but the basic structure remains fairly constant because it is determined by Earth's rotation rate and the difference in solar radiation between the equator and poles.
Intensification was also aided by increased upper-level divergence or the increased upward movement of air. At 09:00 UTC on November 8, the IMD upgraded the system to a severe cyclonic storm, and six hours later to a very severe cyclonic storm. By that time, an eye had developed, described by the IMD as a "banding-type eye". As such, the agency estimated peak 3 minutes sustained winds of 120 km/h (75 mph).
The control of ventilation refers to the physiological mechanisms involved in the control of breathing, which is the movement of air into and out of the lungs. Ventilation facilitates respiration. Respiration refers to the utilization of oxygen and balancing of carbon dioxide by the body as a whole, or by individual cells in cellular respiration. The most important function of breathing is the supplying of oxygen to the body and balancing of the carbon dioxide levels.
The part “physics” in “multiphysics” denotes “physical field”. There, multiphysics means the coexistence of multiple physical fields in a process or a system. In physics, a field is a physical quantity that has a value for each point in space and time. For example, on a weather map, a vector at each point of the map can used to represent the surface wind velocity with both speed and direction for the movement of air at that point.
Imaging extrasolar planets is complicated primarily by the overwhelming brightness of the host star as compared to the planet, which Graham likens to "seeing a firefly next to a searchlight," and the distortions caused by random movement of air in the Earth's atmosphere. By using a coronagraph and adaptive optics, Graham hopes to overcome both difficulties and discover many more planets by the light they emit, and in doing so, learn directly about the composition of extrasolar planets.
A thermal loop is a movement of air driven by warm air rising at one end of the loop, and cool air descending at the other end, creating a constantly moving loop of air. Thermal loops also occur in liquids. Thermal loops are size-independent; that is to say, they may occur in a space as small as a room or as large as a global hemisphere. The Hadley cell is an example of a global- scale thermal loop.
Orographic precipitation, also known as relief precipitation, is precipitation generated by a forced upward movement of air upon encountering a physiographic upland (see anabatic wind). This lifting can be caused by two mechanisms: # The upward deflection of large scale horizontal flow by the orography. # The anabatic or upward vertical propagation of moist air up an orographic slope caused by daytime heating of the mountain barrier surface. Upon ascent, the air that is being lifted will expand and cool.
Forest fire During a conflagration a significant movement of air and combustion products occurs. Hot gaseous products of combustion move upward, causing the influx of more dense cold air to the combustion zone. Sometimes, the influx is so intense that the fire grows into a firestorm. Inside a building, the intensity of gas exchange depends on the size and location of openings in walls and floors, the ceiling height, and the amount and characteristics of the combustible materials.
But there were problems with the structure. The Washington Star newspaper reported that the skylights and windows leaked air and water, the marble floors were poorly laid, and much of the construction was shoddy. The ninth floor was to have served as a file room, but a post-construction inspection showed it could not accommodate the weight. Technological advances in electricity and electrical wiring, mechanical engineering, movement of air, heating, and more made the building out of date as soon as it opened.
Clear-air turbulence (CAT) is the turbulent movement of air masses in the absence of any visual clues, such as clouds, and is caused when bodies of air moving at widely different speeds meet.Stull, B. R., 1988 An introduction to Boundary Layer Meteorology, Kluwert Academic Publishers 666 pp. The atmospheric region most susceptible to CAT is the high troposphere at altitudes of around as it meets the tropopause. Here CAT is most frequently encountered in the regions of jet streams.
Overheating leads to decay, and increases the rate of water loss. In transport it can result from using closed vehicles with no ventilation; stacking patterns that block the movement of air; and using vehicles that provide no protection from the sun. Breakdowns of vehicles can be a significant cause of losses in some countries, as perishable produce can be left exposed to the sun for a day or more while repairs are carried out. At the retail marketing stage losses can be significant, particularly in poorer countries.
Originally named Norton Road School, the school was designed by Raymond Unwin. It was built in a quadrangle with a courtyard for open-air teaching and to allow plentiful light and movement of air. These principles were later to become standard in school design but were very innovative at the time.Norton Road School on the First Garden City Heritage Museum website Over the decades since its foundation, Norton School saw great expansion as pupil numbers grew, with various teaching blocks being added to accommodate these increasing numbers.
Exhalation (or expiration) is the flow of the breath out of an organism. In animals, it is the movement of air from the lungs out of the airways, to the external environment during breathing. This happens due to elastic properties of the lungs, as well as the internal intercostal muscles which lower the rib cage and decrease thoracic volume. As the thoracic diaphragm relaxes during exhalation it causes the tissue it has depressed to rise superiorly and put pressure on the lungs to expel the air.
Blades in a rectangular frame placed in doors or walls to permit the movement of air. :An air handler that conditions 100% outside air. Typically used in industrial or commercial settings, or in "once-through" (blower sections that only blow air one-way into the building), "low flow" (air handling systems that blow air at a low flow rate), or "primary-secondary" (air handling systems that have an air handler or rooftop unit connected to an add-on makeup unit or hood) commercial HVAC systems. Abbreviated MAU.
The layout was problematic and Matcham had to make a series of adjustments. To compensate, he designed a ventilation system which involved the installation of an exhaust duct over the auditorium gas light which caused the heat from the burners to rise up and create a movement of air through the theatre. It was a design that he also used on the Gaiety, Matcham's second Glaswegian theatre. The Royalty took just four weeks to complete and was relatively inexpensive, two factors that helped enhance his reputation.
A report following an examination of a number of external surfaces.11 May 2005. The porous "box" surrounding the house, June 2019 Mackintosh selected portland cement harl, then a newly introduced product, for the surface finish but this was found to be less durable than traditional lime harl and by 2017 it was discovered to be in a precarious condition, putting the integrity of the whole building at risk. As a temporary solution NTS has enclosed Hill House in a transparent porous "box", allowing some movement of air, so that the structure dries out gradually.
Ventilation is one of the most important components in a successful greenhouse. If there is no proper ventilation, greenhouses and their growing plants can become prone to problems. The main purposes of ventilation is to regulate the temperature and humidity to the optimal level, and to ensure movement of air and thus prevent the build-up of plant pathogens (such as Botrytis cinerea) that prefer still air conditions. Ventilation also ensures a supply of fresh air for photosynthesis and plant respiration, and may enable important pollinators to access the greenhouse crop.
Diagram showing the movement of air through the NOTAR system NOTAR, an acronym for NO TAil Rotor, is a helicopter anti-torque system that eliminates the use of the tail rotor on a helicopter. Although the concept took some time to refine, the NOTAR system is simple in theory and provides antitorque the same way a wing develops lift by using the Coandă effect.Frawley 2003, p. 151. A variable pitch fan is enclosed in the aft fuselage section immediately forward of the tail boom and is driven by the main rotor transmission.
Diagram of air current in a supercell Hook echoes are a reflection of the movement of air inside and around a supercell thunderstorm. Ahead of the base of the storm, the inflow from the environment is sucked in by the instability of the air mass. As it moves upward, it cools slower than the cloud environment, because it mixes very little with it, creating an echo free tube which ends at higher levels to form a bounded weak echo region or BWER. At the same time, a mid- level flow of cool and drier air enters the thunderstorm cloud.
Cherry tree moving with the wind blowing about 22 m/sec (about 49 mph) Wind is the flow of gases on a large scale. On the surface of the Earth, wind consists of the bulk movement of air. In outer space, solar wind is the movement of gases or charged particles from the Sun through space, while planetary wind is the outgassing of light chemical elements from a planet's atmosphere into space. Winds are commonly classified by their spatial scale, their speed, the types of forces that cause them, the regions in which they occur, and their effect.
A polar, sub-polar, or Arctic cyclone (also known as a polar vortex) is a vast area of low pressure that strengthens in the winter and weakens in the summer. A polar cyclone is a low-pressure weather system, usually spanning to , in which the air circulates in a counterclockwise direction in the northern hemisphere, and a clockwise direction in the southern hemisphere. The Coriolis acceleration acting on the air masses moving poleward at high altitude, causes a counterclockwise circulation at high altitude. The poleward movement of air originates from the air circulation of the Polar cell.
Behind the moving vehicle, as air has been pushed away, suction is created, and air is pulled to flow into the tunnel. In addition, because of fluid viscosity, the surface of the vehicle drags the air to flow with vehicle, a force experienced as skin drag by the vehicle. This movement of air by the vehicle is analogous to the operation of a mechanical piston as inside a reciprocating compressor gas pump, hence the name 'piston effect.' The effect is also similar to the pressure fluctuations inside drainage pipes as waste water pushes air in front of it.
Meteorologists can extract information about the development stage and subsequent traits of thunderstorms by recognizing specific signatures in both domains. Visible imagery permits the most detailed imagery whereas infrared imagery has the advantage of availability at night. Sensors on satellites can also detect emissions from water vapor (WV: 6-7 µm), but mostly in the middle to upper levels of the troposphere, so thunderstorms are only seen after being well developed. It is, however, useful in convective storm prediction, as it illustrates the placement and movement of air masses and of moisture, as well as shortwaves and areas of vorticity and lifts.
However, in a normal mammal, the lungs cannot be emptied completely. In an adult human there is always still at least 1 liter of residual air left in the lungs after maximum exhalation. The automatic rhythmical breathing in and out, can be interrupted by coughing, sneezing (forms of very forceful exhalation), by the expression of a wide range of emotions (laughing, sighing, crying out in pain, exasperated intakes of breath) and by such voluntary acts as speech, singing, whistling and the playing of wind instruments. All of these actions rely on the muscles described above, and their effects on the movement of air in and out of the lungs.
The Pacific cell is of such importance that it has been named the Walker circulation after Sir Gilbert Walker, an early-20th-century director of British observatories in India, who sought a means of predicting when the monsoon winds of India would fail. While he was never successful in doing so, his work led him to the discovery of a link between the periodic pressure variations in the Indian Ocean, and those between the eastern and western Pacific, which he termed the "Southern Oscillation". The movement of air in the Walker circulation affects the loops on either side. Under normal circumstances, the weather behaves as expected.
Lake Harriet in Minneapolis During a Minnesota summer, heat and humidity predominate in the south, while warm and less humid conditions are generally present in the north. A main feature of summer weather in Minnesota and the Midwestern United States as a whole is the weakening of the jet stream, leading to slower movement of air masses, a general increase in the stability of temperatures, and less wind. The strong wind that does blow almost always comes from the south, bringing in warm temperatures and humidity. These humid conditions and a jet stream that has pushed into the northern parts of the U.S. initiate thunderstorm activity 30–40 days per year.
His over-riding interest in the movement of air and water, and by extension his studies of the movement of unicellular marine creatures and of weather, were related to his lifelong love of sailing. In the 1930s he invented the 'CQR' anchor, which was both stronger and more manageable than any in use, and which was used for all sorts of small craft including seaplanes.Taylor, G. I., The Holding Power of Anchors April 1934 His final research paper was published in 1969, when he was 83. In it he resumed his interest in electrical activity in thunderstorms, as jets of conducting liquid motivated by electrical fields.
Ike Schlossbach warming up the Waco, Spring 1938 Hourly weather observations started September 8, 1937, and reports were transmitted daily to the US Weather Bureau in Washington, D.C. Pilot-balloon observations were made twice daily except during December and January. All observations were continued until the hour of sailing July 7, 1938. MacGregor believed that accurately observing and plotting the development and movement of air masses as they moved across the Arctic would make possible more precise, longer-range Northern Hemispheric weather forecasting. In late 1937 MacGregor, from Etah, Greenland, gave a long-range weather forecast for 1938, based on the observations from his expedition.
Respiratory sounds refer to the specific sounds generated by the movement of air through the respiratory system. These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope as well as from the spectral chacteristics of lung sounds. These include normal breath sounds and adventitious or "added" sounds such as crackles, wheezes, pleural friction rubs, stertor, and stridor. Description and classification of the sounds usually involve auscultation of the inspiratory and expiratory phases of the breath cycle, noting both the pitch (typically described as low, medium or high) and intensity (soft, medium, loud or very loud) of the sounds heard.
The lungs are located in the thoracic cavity, which expands as the first step in external respiration. This expansion leads to an increase in volume of the alveoli in the lungs, which causes a decrease in pressure in the alveoli. This creates a pressure gradient between the air outside the body at relatively high pressure and the alveoli at relatively low pressure. The air moves down the pressure gradient through the airways of the lungs and into the alveoli until the pressure of the air and that in the alveoli are equal, that is, the movement of air by bulk flow stops once there is no longer a pressure gradient.
It is about in size, and exhibits construction techniques common to the period after the American Civil War. It also includes features that were considered modern in the early 20th century for dairy farming purposes, including concrete manure troughs, ventilation slats in the walls, and specialized ducting to facilitate the movement of air to ventilators in the roof. The lower level of the barn is finished in original wooden shingles, while the upper levels of the walls are unfinished, with exposed sheathing. The barn was built sometime in the first decade of the 20th century, by brothers Frank and Edgar Foster, whose parents had farmed the property since the late 1850s.
A metal wind chime Wind chimes are a type of percussion instrument constructed from suspended tubes, rods, bells or other objects that are often made of metal or wood. The tubes or rods are suspended along with some type of weight or surface which the tubes or rods can strike when they or another wind- catching surface are blown by the natural movement of air outside. They are usually hung outside of a building or residence as a visual and aural garden ornament. Since the percussion instruments are struck according to the random effects of the wind blowing the chimes, wind chimes have been considered an example of chance-based music.
In 1944 the Earl of Halifax, then Britain's Ambassador to the U.S., presented to General Hunter, in the name of the King of England, the CBE, "Commander of the military division of the most excellent order of the British Empire." Just a year earlier the general had been awarded the Legion of Merit for "exceptional services" in planning and executing the movement of air echelons of the Twelfth Air Force from Great Britain to North Africa. His other awards include the Distinguished Flying Cross and Purple Heart. Among the units under Hunter's command was the all Negro 477th Bombardment Group stationed at Freeman Field in Seymour, Indiana.
For example, in a weather forecast, the wind velocity during a day over a country is described by assigning a vector to each point in space. Each vector represents the direction of the movement of air at that point, so the set of all wind vectors in an area at a given point in time constitutes a vector field. As the day progresses, the directions in which the vectors point change as the directions of the wind change. The first field theories, Newtonian gravitation and Maxwell's equations of electromagnetic fields were developed in classical physics before the advent of relativity theory in 1905, and had to be revised to be consistent with that theory.
The tympanic duct or scala tympani is one of the perilymph-filled cavities in the inner ear of the human. It is separated from the cochlear duct by the basilar membrane, and it extends from the round window to the helicotrema, where it continues as vestibular duct. The purpose of the perilymph-filled tympanic duct and vestibular duct is to transduce the movement of air that causes the tympanic membrane and the ossicles to vibrate, to movement of liquid and the basilar membrane. This movement is conveyed to the organ of Corti inside the cochlear duct, composed of hair cells attached to the basilar membrane and their stereocilia embedded in the tectorial membrane.
A lamp shade's surfaces have varying proximity to the light bulb or light source itself, depending on the size and shape of the shade. With larger shades this is less of a problem, since the shade provides an ample funnel for the movement of air up through the shade, whereby heat from the bulb leaves the top of the shade through the opening. However with smaller shades consideration has to be given to proximity of the shade surface to the bulb, especially in miniature shades used on chandeliers. Here, and especially with shades which have sloped sides, the distance between the surface and the bulb reduces making the risk of overheating a concern.
Gayler's work at NPL alongside Hanson and Haughton established an understanding of the mechanisms of age hardening in the duralumin family of aluminium alloys. This work lay the foundations for the development of Y-alloy, an aluminium alloy containing nickel as well as the copper, magnesium and silicon found in typical duralumin alloys. The addition of nickel improved upon the strength and hardness of age-hardened duralumin at temperatures of 150-200degC, making it ideal for use as a piston material in combustion engines. A Y-alloy was also used as the skin of Concorde to enable it to withstand the temperatures caused by the movement of air over the aircraft when travelling at supersonic speeds.
The damage caused by the mainshock and the subsequent series of tremors was at least partly repaired in both Pompeii and Herculaneum by the time of the AD 79 eruption. A pair of bas-reliefs, probably from the lararium in the house of Lucius Caecilius Iucundus in Pompeii, are interpreted as depicting the effects of the earthquake on structures including the Temple of Jupiter, the Aquarium of Cesar, and the Vesuvius Gate. The earthquake led Roman philosopher, statesman and dramatist Seneca the Younger to devote the sixth book of his Naturales quaestiones to the subject of earthquakes, describing the event of 5 February and giving the cause of earthquakes as the movement of air.
Idealised depiction (at equinox) of large-scale atmospheric circulation on Earth Long-term mean precipitation by month Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The smaller scale weather systems – mid-latitude depressions, or tropical convective cells – occur "randomly", and long-range weather predictions of those cannot be made beyond ten days in practice, or a month in theory (see Chaos theory and the Butterfly effect). The Earth's weather is a consequence of its illumination by the Sun, and the laws of thermodynamics.
Idealised depiction of the global circulation on Earth Atmospheric circulation is the large-scale movement of air, and is a means by which thermal energy is distributed on the surface of the Earth, together with the much slower (lagged) ocean circulation system. The large-scale structure of the atmospheric circulation varies from year to year, but the basic climatological structure remains fairly constant. Latitudinal circulation occurs because incident solar radiation per unit area is highest at the heat equator, and decreases as the latitude increases, reaching minima at the poles. It consists of two primary convection cells, the Hadley cell and the polar vortex, with the Hadley cell experiencing stronger convection due to the release of latent heat energy by condensation of water vapor at higher altitudes during cloud formation.
The Subsurface Flow and Transport Team at the Los Alamos National Laboratory (LANL) has been involved in large scale projects including performance assessment of Yucca Mountain, Environmental Remediation of the Nevada Test Site, the LANL Groundwater Protection Program and geologic CO2 sequestration. Subsurface physics has ranged from single fluid/single phase fluid flow when simulating basin scale groundwater aquifers to multi-fluid/multi-phase fluid flow when simulating the movement of air and water (with boiling and condensing) in the unsaturated zone surrounding a potential nuclear waste storage facility. These and other projects have motivated the development of software to assist in both scientific discovery and technical evaluation. LANL’s FEHM (Finite Element Heat and Mass) computer code simulates complex coupled subsurface processes as well flow in large and geologically complex basins.
Soil profile: Darkened topsoil and reddish subsoil layers are typical in of humid subtropical climate regions A typical soil is about 50% solids (45% mineral and 5% organic matter), and 50% voids (or pores) of which half is occupied by water and half by gas. The percent soil mineral and organic content can be treated as a constant (in the short term), while the percent soil water and gas content is considered highly variable whereby a rise in one is simultaneously balanced by a reduction in the other. The pore space allows for the infiltration and movement of air and water, both of which are critical for life existing in soil. Compaction, a common problem with soils, reduces this space, preventing air and water from reaching plant roots and soil organisms.
A weak and disorganized Mediterranean tropical-like cyclone on 28 January 2009 The development of Medicanes often results from the vertical shift of air in the troposphere as well, resulting in a decrease in its temperature coinciding with an increase in relative humidity, creating an environment more conducive for tropical cyclone formation. This, in turn, leads to in an increase in potential energy, producing heat-induced air-sea instability. Moist air prevents the occurrence of convective downdrafts—the vertically downward movement of air—which often hinder the inception of tropical cyclones, and in such a scenario, wind shear remains minimal; overall, cold-core cut-off lows serve well for the later formation of compact surface flux-influenced warm- core lows such as Medicanes. The regular genesis of cold-core upper-level lows and the infrequency of Mediterranean tropical cyclones, however, indicate that additional unusual circumstances are involved the emergence of the latter.
Because the Earth spins, Earth-bound observers need to account for the Coriolis force to correctly analyze the motion of objects. The Earth completes one rotation for each day/night cycle, so for motions of everyday objects the Coriolis force is usually quite small compared with other forces; its effects generally become noticeable only for motions occurring over large distances and long periods of time, such as large-scale movement of air in the atmosphere or water in the ocean; or where high precision is important, such are long range artillery or missile trajectories. Such motions are constrained by the surface of the Earth, so only the horizontal component of the Coriolis force is generally important. This force causes moving objects on the surface of the Earth to be deflected to the right (with respect to the direction of travel) in the Northern Hemisphere and to the left in the Southern Hemisphere.
Kangaroo licking its arms to cool down In cold environments, birds and mammals employ the following adaptations and strategies to minimize heat loss: # Using small smooth muscles (arrector pili in mammals), which are attached to feather or hair shafts; this distorts the surface of the skin making feather/hair shaft stand erect (called goose bumps or pimples) which slows the movement of air across the skin and minimizes heat loss. # Increasing body size to more easily maintain core body temperature (warm- blooded animals in cold climates tend to be larger than similar species in warmer climates (see Bergmann's Rule)) # Having the ability to store energy as fat for metabolism # Have shortened extremities # Have countercurrent blood flow in extremities – this is where the warm arterial blood travelling to the limb passes the cooler venous blood from the limb and heat is exchanged warming the venous blood and cooling the arterial (e.g., Arctic wolf or penguinsAdaptations for an Aquatic Environment. SeaWorld/Busch Gardens Animal Information Database, 2002.
The scientific basis for passive solar building design has been developed from a combination of climatology, thermodynamics (particularly heat transfer: conduction (heat), convection, and electromagnetic radiation), fluid mechanics/natural convection (passive movement of air and water without the use of electricity, fans or pumps), and human thermal comfort based on heat index, psychrometrics and enthalpy control for buildings to be inhabited by humans or animals, sunrooms, solariums, and greenhouses for raising plants. Specific attention is divided into: the site, location and solar orientation of the building, local sun path, the prevailing level of insolation (latitude/sunshine/clouds/precipitation), design and construction quality/materials, placement/size/type of windows and walls, and incorporation of solar-energy-storing thermal mass with heat capacity. While these considerations may be directed toward any building, achieving an ideal optimized cost/performance solution requires careful, holistic, system integration engineering of these scientific principles. Modern refinements through computer modeling (such as the comprehensive U.S. Department of Energy "Energy Plus" building energy simulation software), and application of decades of lessons learned (since the 1970s energy crisis) can achieve significant energy savings and reduction of environmental damage, without sacrificing functionality or aesthetics.
The drive unit is effectively coupled to a long column of air which has mass. This lowers the resonant frequency of the drive unit, negating the need for a highly compliant device. Furthermore, the column of air provides greater force on the driver itself than a driver opening onto a large volume of air (in simple terms it provides more resistance to the driver's attempt to move it), so to control the movement of air requires an extremely rigid cone, to avoid deformation and consequent distortion. The introduction of the absorption materials reduces the velocity of sound through the line, as discovered by Bailey in his original work. Bradbury published his extensive tests to determine this effect in a paper in the Journal of the Audio Engineering Society (JAES) in 1976 L J S Bradbury, “The Use of Fibrous Materials in Loudspeaker Enclosures”, Journal of the Audio Engineering Society, April 1976, pages 404-412 and his results agreed that heavily damped lines could reduce the velocity of sound by as much as 50%, although 35% is typical in medium damped lines. Bradbury’s tests were carried out using fibrous materials, typically longhaired wool and glass fibre.

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