Physical Significance of the Poynting Vector in Static Fields
作者:
Emerson M. Pugh,
George E. Pugh,
期刊:
American Journal of Physics
(AIP Available online 1967)
卷期:
Volume 35,
issue 2
页码: 153-156
ISSN:0002-9505
年代: 1967
DOI:10.1119/1.1973915
出版商: American Association of Physics Teachers
数据来源: AIP
摘要:
Even in static fields, where there is no observable energy flow, Poynting vector momentum must be considered to avoid an apparent violation of the angular-momentum law. This often-neglected aspect of the Poynting vector, is illustrated in an easily calculated example. Two other simple and rigorously solvable pedagogical examples illustrate the role of the Poynting vector in defining the energy flow in static fields.
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