the total magnetic induction crossing a surface, equal to the integral of the component of magnetic induction perpendicular to the surface over the surface: usually measured in webers or maxwells.
φ a measure of the strength of a magnetic field over a given area perpendicular to it, equal to the product of the area and the magnetic flux density through it
The lines of force associated with a magnetic field. The strength of magnetic flux is equivalent to its magnetic flux density per unit area. The SI unit of magnetic flux is the weber.