  A non relativistic electron with a spin is described by Pauli's equation. It
has been shown that this system can be interpreted as a vortical fluid which
has both similarities and differences with classical ideal flows. Moreover, it
was demonstrated that the internal energy of the spin fluid can partially be
interpreted in terms of Fisher Information. While previous work on the subject
has mainly ignored electromagnetic fields which are represented by a vector
potential here we remove this limitation and study the system under general
electromagnetic interaction.
