# Divergence theorem

1. Oct 29, 2011

### wasi-uz-zaman

HI experts
i want to know the physical significance of divergence theorem i.e how volume integral changes to surface integral - how can i explain in simple words.

2. Oct 29, 2011

### arildno

Hi!
Basically, the divergence can be thought of as the (relative) rate of change of volume.

But, we may do this in another way, namely by calculating the net flux across the original surface.

3. Oct 29, 2011

thanks alot