quantitykind:MagneticFluxDensity
"Magnetic Flux Density" is a vector quantity and is the magnetic flux per unit area of a magnetic field at right angles to the magnetic force. It can be defined in terms of the effects the field has, for example by $B = F/q v \sin \theta$, where $F$ is the force a moving charge $q$ would experience if it was travelling at a velocity $v$ in a direction making an angle θ with that of the field. The magnetic field strength is also a vector quantity and is related to $B$ by: $H = B/\mu$, where $\mu$ is the permeability of the medium.