Electricity and Magnetism, 820p 3rd ed | United States National Institute for Occupational Safety and Health |
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require no medium to support their propagation |
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12See Liebel, F; Kaur, S; Ruvolo, E; Kollias, N; Southall, M | |
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Philosophical Transactions of the Royal Society of London | the Poynting vector describes the energy flow |
559-562" as quoted in Gabriela, 2009•.
20