When the differential is in positive territory (red) it means higher, stronger air over the North Atlantic pushes up on the low-pressure air over the Arctic circle.
If I take 7 lbs. of air pressure out of a balloon and replace it with 3 lbs. of air pressure, is the balloon inflated or deflated from its previous state?
If there was a failure in the air supply system then the pressure would decrease more slowly but still eventually match the outside air pressure.
The biggest hurdle was that the plastic had to be strong enough to hold the positive pressure of air pumped in, says Michael Metta, Sealed Air's technology chief.
"By that I mean try to imagine creating a cavity inside your mouth without any air bubbles and by letting in no air through your lips or throat -- it's basically impossible at sea level because the air pressure outside your mouth pushes the air pocket closed, " he said.
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If the regulating valves fail or if the cabin structure is breached (by a failure of a door or window for example) then the pressure in the cabin would suddenly drop to match the outside air pressure.
The difference between turbocharging and supercharging is simple: a turbocharger boosts engine air pressure by using exhaust gas to power a turbine that pushes more air into the combustion chamber.
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The fuel is air compressed to 4, 350 pounds per square inch, or 300 times the pressure of the air you breathe.
Those characteristics can include a brief dip in air pressure, a change in wind direction, a change in wind speed, a rise in air temperature or a dip in ultraviolet light reaching the rover.
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In this phenomenon, dramatic changes in air pressure (a massive rise followed by a rapid depressurization) can seriously damage internal tissues exposed to air such as the lungs and gastrointestinal tract.
The difference in air pressure made the rocket behave abnormally, and probably contributed to the crash.
The lower air pressure reduces the effectiveness of breaking pitches and lets balls travel farther.
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Or how the horn honks automatically when filling the tires to tell when the air pressure is right.
Plus, the arm can get stronger by simply dialing up the air pressure.
Rems has also been tracking the hourly and daily changes in air pressure.
The Airbus A350 will offer similar improvements in humidity and air pressure.
It was a nasty looking place, but the building is under negative air pressure to prevent the stink from escaping.
Authorities said they were checking whether an air pressure machine used to clean mail sorters may have spread anthrax spores.
Spreading the area of air pressure over the jet staggers the sound waves and decreases the intensity of the boom.
As the liner is inserted into the pipe, it is turned inside out and forced through using water or air pressure.
Since the amount of oxygen the paint gets depends on the air pressure, the greater the pressure, the less the paint glows.
It uses no other motors, and the strength of the grasp is controlled by a change in air pressure, making the hand quite dextrous.
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An ideal one would keep the same rate regardless of variation in power supply, temperature, air pressure, magnetic fields, or any other disturbing influences.
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During the Russian side of the pre-sleep debriefing on Sunday, Mission Control in Moscow congratulated Kaleri for fixing the leak and stabilizing air pressure.
It's an airtight pod that changes air pressure, temperature and density.
While the smallest eruptions have caused only minor local disruptions, the larger ones have entered passing fronts, cooling temperatures, altering air pressure, and increasing precipitation.
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The strength of the high-tech material allows airlines to raise cabin air pressure and increase humidity, which should make passengers more comfortable on long flights.
At Sunday's jump altitude, the air pressure is less than 2% of what it is at sea level, and it is impossible to breathe without an oxygen supply.
In other words the iron lung is sealed and attached to bellows, which lower the air pressure inside the iron lung to create a negative pressure.
We had considered making a cannon that used ignited hair spray as a propellant but after a bit of research discovered that air pressure was far more effective.
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