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ERIC Number: EJ1083358
Record Type: Journal
Publication Date: 2006-Nov
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0031-921X
An Atmospheric Pressure Ping-Pong "Ballometer"
Kazachkov, Alexander; Kryuchkov, Dmitriy; Willis, Courtney; Moore, John C.
Physics Teacher, v44 n8 p492-495 Nov 2006
Classroom experiments on atmospheric pressure focus largely on demonstrating its existence, often in a most impressive way. A series of amusing physics demonstrations is widely known and practiced by educators teaching the topic. However, measuring the value of atmospheric pressure(P[subscript atm]) is generally done in a rather mundane way, simply by reading some commercially produced meter. Even though students building a 35-ft high water barometer is definitely instructive, as is the measurement of P[subscript atm] with much smaller gas-filled devices, there exist hardly any physics lab exercises focused on the measurement of atmospheric pressure. This paper describes a modification of a well-known physics demonstration into an experiment that allows one to estimate atmospheric pressure quite accurately. Our simple and inexpensive apparatus can be used in lecture demonstrations or as a tool in an educational laboratory setting.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Guides - Classroom - Learner; Reports - Descriptive
Education Level: N/A
Audience: Teachers; Students
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A