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Line 1: − + − Simply put, the overall net flux through a closed surface equals the sum of all the changes in flux throughout the volume enclosed by the surface.+
clarified further
The '''divergence theorem''' establishes the volume integral (triple integral) of the derivative (divergence) of a vector function over a three-dimensional shape ''equals'' the double integral of the perpendicular component of same function with respect to a two-dimensional surface that encloses the space.
The '''divergence theorem''' states that the overall (net) flux through the surface of an object equals the summation of all the changes in flux inside the object. Stated more formally, the net flux through a closed surface equals the sum of all the changes in flux throughout the volume enclosed by the surface.
In mathematical terms, the '''divergence theorem''' establishes that the volume integral (triple integral) of the derivative (divergence) of a vector function over a three-dimensional shape ''equals'' the double integral of the perpendicular component of same function with respect to a two-dimensional surface that encloses the space.
For example, the volume integral of the electric field caused by a charge within an electric sphere equals the surface integral of that same field.
For example, the volume integral of the electric field caused by a charge within an electric sphere equals the surface integral of that same field.