week2 (dragged) 47

week2 (dragged) 47 - r p E Thursday, September 2, 2010

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( p · ˆ r r = p E = 1 4 π° 0 ° 3 p p r 3 ± = 1 2 π° 0 ² p r 3 ³ E-field of a dipole 40 E = 1 4 π° 0 ° 3( p · ˆ r r p r 3 ± e.g. on an axis
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