Pressure Air

Thanks for visiting our site!
We Welcome you to browse our website and use the search feature if there is something in particular you are looking for.

Check Ebay for Pressure Air products.

US Auctions Australian Auctions Austrian Auctions Belgian Auctions Canadian Auctions French Auctions German Auctions Indian Auctions Irish Auctions Italian Auctions Dutch Auctions Polish Auctions Spanish Auctions Swiss Auctions UK Auctions

Best Match Time: ending soonest Time: newly listed Price: lowest first Price: highest first Price + Shipping: lowest first Price + Shipping: highest first

ATS SUPPORT SURFACE SERIES Alternating Air Pressure Mattress with Pump    US $499.99

Low Air Loss Alternating Pressure Mattress and Pump    US $99.00

Alternating Pressure Hospital Bed Mattress Air Pad APP    US $59.89

DRIVE 14001E Med Aire Alternating Pressure Pump Pad    US $70.00

American Bantex Genesis 8 Alternating Pressure Pump and Low Air Loss Mattress    US $367.95

10 OSTO EZ OSTOMY POUCH BAG AIR PRESSURE RELEASE VENT    US $22.99

Wheelchair cushion Air Water Pressure Sores bedsore preven Sedentary Workers    US $9.70

Med Aire Alternating Pressure Pump and Pad System with Various Pump Options and    US $114.28

Drive Medical Low Air Loss Alternating Pressure Hospital Bed Mattress Med Aire    US $539.99

Wheelchair air cushion Pressure Sores bedsore prevent roho Style    US $49.00

Med Aire Low Air Loss Mattress Replacement System with Alternating Pressure    US $538.48

Drive 14002E Med Aire Alternating Pressure Pump and Pad System Fixed Pressure    US $72.58

Drive 14001EFD Med Aire Alternating Pressure Pump and Pad System Variable Pressu    US $106.78

Drive 14001E Med Aire Alternating Pressure Pump and Pad System Fixed Pressure W    US $91.44

Drive 14001E Med Aire Alternating Pressure Pump and Pad System Variable Pressure    US $76.97

MicroAIR Rotating Alternating Low Air Loss Pressure Mattress with compressor    US $3,714.00

Invacare Alternating Pressure Hospital Bed Mattress w On Demand Low Air Loss    US $971.95

Invacare MA65 microAIR Alternating Pressure with On Demand Low Air Loss    US $1,795.00

Invacare Alternating Pressure Low Air Loss Bed Mattress    US $972.95

New Mason LS9000B 60 Low Air Loss Alt Pressure Mattress    US $1,847.65

1	Powered by phpBay Pro

Air Pressure? Feel the Weight on Your Shoulders

The weight of air resting on a given area of the Earth's surface is known as air pressure. Air pressure (or atmospheric pressure) is always greatest at sea level, where the air is at its most dense. Therefore at the top of a mountain the air is less dense and therefore the pressure is lower.

The air is composed of billions of tiny particles that are constantly moving in all directions, bouncing off whatever they encounter. These collisions constitute what is known as air pressure. The more collisions occurring within a certain area then the greater the air pressure will be.

We are completely unaware of this, but the air is constantly exerting pressure on us, on average this is 14 ¾ pounds per square inch. (1 kg per sq cm ) . Air molecules are naturally drawn towards the earth by gravity, and as a consequence the density of the air is greater near the surface of the earth. Therefore the number of molecules in a given area, the air pressure, decreases with altitude. These molecules are in constant motion and this prevents them from settling at ground level.

At sea level, standard air pressure is 1013, but typically the pressure varies between 980 and 1040 millibars (mb). As with any aspect of the atmosphere there are extremes and the highest and lowest recorded pressures are as follows:

The highest recorded atmospheric pressure, 1085.7 mb, occurred at Tonsontsengel, Mongolia, 19 December 2001.

The lowest sea level air pressure ever recorded was 870 mb in the eye of Typhoon Tip over the Pacific Ocean on October 12th 1979

Air pressure is measured using a barometer. Although the changes are usually too slow to observe directly, air pressure is almost always changing.

Weather maps showing the pressure at the surface are drawn using millibars. Air pressure can tell us about what kind of weather to expect as well. Winds blow in an attempt to combat the differences in air pressure. Wind is the movement of air over the surface of the Earth, from areas of high pressure to low pressure. A large change in pressure over a relatively small distance, a large pressure gradient, can result in far stronger winds. When the isobars are tightly packed, locations within that large pressure gradient can expect windy conditions. As air rises and creates an area of low pressure, water vapour in the atmosphere will condense and form clouds. However sinking air, in an area of high pressure, means that no condensation will take place. This is why low pressure is associated with cloudy skies and unsettled conditions, and high pressure is associated with clearer skies and drier conditions.

Winds near the Earth's surface rotate anti clockwise toward the centre of areas of low pressure and clockwise outward from the centre of areas of high pressure in the Northern Hemisphere, with an opposite flow (clockwise around areas of low pressure and counter clockwise around areas of high pressure) occurring in the Southern Hemisphere. The main reason for this pattern is the Coriolis force, which results from the Earth's rotation on its axis and deflects wind to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

So keep tapping your barometers and feel the weight of the air pressing in around you!

About the Author

Mark Boardman BSc dip.hyp is an experienced Hypnotherapist and highly qualified EFT and TAT practitioner. After a childhood interest in the Weather Mark went on to study Climatology at University and has continued his studies for the subsequent 20 years. Air Pressure and Barometers

Thanks for visiting!