Retrieving "Divergence Of Magnetic Field" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Free Space

   Linked via "divergence of the magnetic field"

   Magnetic Flux Lines in Absence of Matter
   Magnetic flux lines ($\mathbf{B}$ field lines) are mathematical constructs used to visualize magnetic fields. In true free space, where no material sources (currents or magnetic dipoles) exist, the divergence of the magnetic field must be zero ($\nabla \cdot \mathbf{B} = 0$). Consequently, magnetic flux lines in an idealized, emp…