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ERIC Number: EJ1000755
Record Type: Journal
Publication Date: 2012-Dec
Pages: 2
Abstractor: As Provided
Reference Count: 7
ISBN: N/A
ISSN: ISSN-0031-921X
Determining Atmospheric Pressure Using a Water Barometer
Lohrengel, C. Frederick, II; Larson, Paul R.
Physics Teacher, v50 n9 p563-564 Dec 2012
The atmosphere is an envelope of compressible gases that surrounds Earth. Because of its compressibility and nonuniform heating by the Sun, it is in constant motion. The atmosphere exerts pressure on Earth's surface, but that pressure is in constant flux. This experiment allows students to directly measure atmospheric pressure by measuring the mass of the water that is used as the fluid medium in the barometer. Simple calculations based upon the mass of water collected from the barometer yield the mass of the atmosphere per square unit of area at the site where the experiment is conducted.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A