how a volume integral of a divergence can be related to the flux of a vector field through the boundary surface

The demonstration will feature a 3D volume (a U-shaped blob) and its 2D projection onto the $x^2-x^3$ plane. The user will be able to manipulate the view to observe the volume, its projection, the integration path along the $x^1$ axis, and a conceptual normal vector $n$. The purpose is to provide a dynamic, hands-on understanding of the geometric relationships central to the Divergence Theorem.

$\complement\cdots$Counselor

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