I am an Electrical Engineer, currently final year student at PIEAS university, the top ranked university in Pakistan. I have worked a lot in matlab especially dealing with electromagnetic theory. I have keen interest in it. My goal is not to earn money thats why offering you this in much less cost 10 USD. It will be my first project but believe me i shall try my best to convey my knowlege. Let me know the function of magnetic density. Thanks.