
Divergence
A property of a vector field that measures its tendency to move away from a given point.

Curl
A property of a vector field that indicates the amount and direction of rotational motion in the field.
Terms
Formula
The divergence of a vector field 

Gauss' Theorem  Mathematical equation relating volume and surface integrals using the divergence of a given function: F ·da = div Fdv 
The curl of a vector field  curl F =  ,  ,  
Stokes' Theorem  Mathematical equation relating line and surface integrals using the curl of a given function: F ·ds = curl F ·da 
Equation for the line integral of a closed loop in a magnetic field  B·ds = 
Equation for the curl of any magnetic field  curl B = 
Equation for the divergence of any magnetic field  div B = 0 