Equations · equation

Gauss's Law for Magnetism

Electromagnetism · 1835

Equation
∇·B = 0
Field
Electromagnetism
Named After
Carl Friedrich Gauss
Symbols
B magnetic field · ∇· divergence (net outflow from a point)
Year
1835

Significance

Magnetic field lines never start or end — there are no magnetic monopoles. Cut a magnet in half and you get two magnets, never a lone north pole. Second of Maxwell's four equations.

Minerals

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From the Equations database in Notion, last edited 2026-08-18. This page is the row, rendered by the build; nothing on it is written by hand.