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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:15 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Theoretical Physics and Applied Mathematics Seminar
Title:
Is the radiation field calculation from Jefimenko`s equations a new insight in the theory?
Authors:
C. Vrejoiu, R. Zus
Affiliation:
University of Bucharest, Faculty of Physics, P.O. Box MG-11, RO-077125 Bucharest-Magurele, Romania
E-mail
vrejoiu@fizica.unibuc.ro,roxana.zus@fizica.unibuc.ro
Keywords:
Jefimenko`s equations, radiation field
Abstract:
Despite the successful and long history of the electromagnetic field theory, there are several topics opened to new theoretical and pedagogical contributions. One of them is related to the importance of Jefimenko`s equations for expressing the electric and magnetic field when discussing the radiation theory.
Motivated by a recent publication on the topic, we discuss some features of the multipolar expansion of the power radiated by a confined system of charges and currents. We investigate if the employment of Jefimenko`s equations brings, as sometimes presented in the literature, a new insight for the calculation of the radiation field. We show that the affirmation would be valid if one found an interesting example in which inverting the order between spatial derivatives and integration is not allowed. This is not usually the case in most of the calculations done in the radiation theory.
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