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Dec21-10, 09:11 AM
P: 77
Okay, and if we draw a closed surface that encompasses a part of both of the materials and crosses the boundary, with no free charges we have [tex]\int_S \vec D \cdot \hat n dS=0[/tex], so then the total flux out of the surface is zero, so that would imply that D_{1,2} are just equal, not just the components normal to the surface no?