Intuitive Guide to Maxwell's Equations
These kinds of visual, well thought out explanations of topics which are often taught with terse, obscure and uninviting methods are a gift.<p>On a tangent: I remember asking my Calculus 101 professor what the "intuitive meaning" of divergence and curl was, outside of the formal math and equations. He was shocked that one could ask to sully these perfect mathematical concepts with dirty intuitive reductions. A guide like this, or 3-Blue-1-Brown videos would have made my day, then.