Abstract
The mathematical formulation of electromagnetic wave phenomena in lossy, dispersive media is well known and understood. Furthermore, the interpretation of Poynting’s theorem as a statement of conservation of energy for the coupled electromagnetic field-medium system is widely accepted1. However, its interpretation with regards to the thermal energy generated by a given electromagnetic field in a lossy medium is frequently misunderstood and incorrectly applied if the material is dispersive (as required by causality).
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Smith, P.D., Oughstun, K.E. (1995). Electromagnetic Energy Dissipation of Ultra-Wideband Plane Wave Pulses in a Causal, Dispersive Dielectric. In: Carin, L., Felsen, L.B. (eds) Ultra-Wideband, Short-Pulse Electromagnetics 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-1394-4_30
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DOI: https://doi.org/10.1007/978-1-4899-1394-4_30
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