Magnetizing a sphere

Imagine you had an iron sphere and you wanted to magnetize the sphere in a particular direction of your choosing. We know from classical magnetostatics that this is possible by applying an external magnetic field (, where is the magnetic permeability of free space) strong enough to rotate all of the magnetic moments (electron spins)

Coffee Mugs and Least Square’s Fitting

If you’re like me, you really enjoy the ability to load useful functions from the seemingly endless number of python libraries available to users, until one fails on you. Its at this point that we have three options: 1) give up, 2) research a debugging method on the internet relevant to your specific failure or