If $F$ is a vector field, I understand that the div(curl $F$) = 0. But would the curl(div $F$) have any interpretation?
Div and Curl Identities
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multivariable-calculus
1 Answers
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No. $\text{div}$ takes in vector fields and produces scalar fields; $\text{curl}$ takes in vector fields and produces vector fields. Thus, given a vector field $F$, it makes sense to write $\text{div}(\text{curl}(F)),$ but not to write $\text{curl}(\text{div}(F)).$ So there is no interpretation because it doesn't mean anything in the first place :)
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1You might be interested in [this question](http://math.stackexchange.com/questions/26854/what-is-an-intuitive-explanation-for-div-curl-f-0), and many of the others that appear on the right side of the screen. – 2011-10-29