Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,755,047,982 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

barometric pressure

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.04 sec.

atmospheric pressure

 or barometric pressure

Force per unit area exerted by the air above the surface of the Earth. Standard sea-level pressure, by definition, equals 1 atmosphere (atm), or 29.92 in. (760 mm) of mercury, 14.70 lbs per square in., or 101.35 kilopascals, but pressure varies with elevation and temperature. It is usually measured with a mercury barometer (hence the term barometric pressure), which indicates the height of a column of mercury that exactly balances the weight of the column of atmosphere above it. It may also be measured using an aneroid barometer, in which the action of atmospheric pressure in bending a metallic surface is made to move a pointer.

barometric pressure [bar·ə′met·rik ′presh·ər]


How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
 Email
Feedback
? Mentioned in ? References in periodicals archive
 
The John Deere Complete Wireless Weather Station comes equipped with outdoor sensors that operate on solar power and forecast for the next 12 to 24 hours based on barometric pressure.
Technology Journal by Henderson, Pam / Farm Journal
This means forecasts for barometric pressure, wind speed and direction, wave heights and more can be overlaid right on top of your charts.
Hottips and news you can use by Croft, Scott / BOAT/U.S. Magazine
If one trains at sea level where the relative oxygen content of the ambient air is 21%, and the barometric pressure is 760 mmHg (mercury), and the atmospheric oxygen pressure is 160mm Hg, the alveolar oxygen pressure averages about 110 mmHg, and the arterial blood oxygen pressure rises to 96 mmHg.
You leave me breathless by Nessel, Edward H. / AMAA Journal
More results
 
Encyclopedia browser? ? Full browser
 
 
Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2009 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.