1. The non-uniform current density must also be considered when calculating the magnetic flux density . 2. H is the applied external magnetic field, M is the total magnetic flux density of the material. 3. If the current is not changing, then the Hall voltage is a measure of the magnetic flux density . 4. Sometimes the term "'retentivity "'is used for remanence measured in units of magnetic flux density . 5. The equation for the on-axis magnetic flux density of a Bitter disc becomes much more complex as a result. 6. This is because the internal magnetic domains of the material align with each other to greatly enhance the magnetic flux density . 7. This is a derivation of the magnetic flux density around a solenoid that is long enough so that fringe effects can be ignored. 8. Where p is the momentum of the positron, e is the charge of the positron and B is the magnetic flux density . 9. The magnetic flux density is increased by 30 % in the coil rolling direction, although its magnetic saturation is decreased by 5 %. 10. It should also be noted that in most older literature, is called the " magnetic flux density " or " magnetic induction ".