I had worked on the permanent magnetic flux density calculation after i had read few books on the magnetism density flux. But there is no formulas or illustration on the formula when an arbitary point which is any point within the permanent magnetic area, is shown the formula or relationship with the flux density. So, I would like to ask whether there is any discovered calculation formulas provided in any other recommended books.
Thanks and I hope that this topic will let more people to aware of the application and usefulness of permanent magnetic.