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ERIC Number: EJ892051
Record Type: Journal
Publication Date: 2007-Dec
Pages: 4
Abstractor: As Provided
Reference Count: 3
ISBN: N/A
ISSN: ISSN-0031-921X
GEOMAG[TM] Paradoxes
Defrancesco, Silvia; Logiurato, Fabrizio; Karwasz, Grzegorz
Physics Teacher, v45 n9 p542-545 Dec 2007
As often happens, a lot of physics can come out of a toy. What we found interesting is the observation of the magnetic field produced by different configurations built with GEOMAG[TM]. This toy provides small magnetic bars and steel spheres to play with. Amusing 3-D structures can be built; nevertheless, this possibility is not so obvious. Indeed, in order to build a solid figure it is necessary to join at least three bars to a sphere, and therefore at least two of the poles attached to the sphere present the same polarity, but opposite poles should attract and similar poles should repel. To understand what happens, it is helpful to consider simpler configurations.
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