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ERIC Number: EJ984065
Record Type: Journal
Publication Date: 2012-Apr
Pages: 3
Abstractor: As Provided
Reference Count: 6
ISBN: N/A
ISSN: ISSN-0031-921X
Causality in Classical Electrodynamics
Savage, Craig
Physics Teacher, v50 n4 p226-228 Apr 2012
Causality in electrodynamics is a subject of some confusion, especially regarding the application of Faraday's law and the Ampere-Maxwell law. This has led to the suggestion that we should not teach students that electric and magnetic fields can cause each other, but rather focus on charges and currents as the causal agents. In this paper I argue that fields have equal status as casual agents, and that we should teach this. Following a discussion of causality in classical physics, I will use a numerical solution of Maxwell's equations to inform a field-based causal explanation in electrodynamics.
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