1. Jan 3, 2015 #1

   goran d

   

   http://en.wikipedia.org/wiki/Jefimenko's_equations
   
   What is the integral in these equations called? how do you integrate over (d^3)r'?

    

   goran d, Jan 3, 2015
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3. Jan 3, 2015 #2

   ShayanJ

   

   Insights Author

   Gold Member

   That means a volume element. In Cartesian coordinates its [itex] dx' \ dy' \ dz' [/itex], in spherical coordinates [itex] r'^2 \ \sin\theta' \ dr' \ d\varphi \ d\theta [/itex] and in cylindrical coordinates [itex] \rho \ d\rho' \ d\varphi' \ dz' [/itex].

    

   ShayanJ, Jan 3, 2015

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