- #1
constfang
- 10
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http://einstein1.byu.edu/~masong/emsite/S1Q50/EQMakerSL1.gif
Hi guys, I have a little confusion about the Gauss' law in differential form over here, obviously, many textbook wrote it in the above form, but actually, the only place at which divE is not zero is at the locations where the charges are present. so I read over here: http://farside.ph.utexas.edu/teaching/em/lectures/node30.html#e343 (equation 208) that there should be a Dirac delta function over there, is it correct? then why does people keep omitting that Dirac delta function and just quoted it as above, where no information regarding the position of the point where we're calculating the divergence is given? Thank you.
Hi guys, I have a little confusion about the Gauss' law in differential form over here, obviously, many textbook wrote it in the above form, but actually, the only place at which divE is not zero is at the locations where the charges are present. so I read over here: http://farside.ph.utexas.edu/teaching/em/lectures/node30.html#e343 (equation 208) that there should be a Dirac delta function over there, is it correct? then why does people keep omitting that Dirac delta function and just quoted it as above, where no information regarding the position of the point where we're calculating the divergence is given? Thank you.