Static Poynting flow
= Static Poynting flow
Time-independent crossed electric and <magnetic fields> can carry a nonzero <energy> flux $\mathbf S=\mathbf E\times\mathbf H$. A steady coaxial circuit is an example: radial electric and azimuthal <magnetic fields> carry <energy> axially from source to load. Static <energy density> does not imply zero flux.