Physical interpretation of Cauchy's integral formula

what is the Physical interpretation of Cauchy's integral formula ?

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Repeat of math.stackexchange.com/questions/4054/… ??? –  Euler....IS_ALIVE Aug 29 '12 at 5:27
@Euler: I think this is more specific. None of the answers in that thread give physical interpretations. –  Qiaochu Yuan Aug 29 '12 at 5:31
@Naveen: start here: en.wikipedia.org/wiki/… –  Qiaochu Yuan Aug 29 '12 at 5:39