Maxwell’s Top: a well-made miniature version of one of my favorite demonstrations of the strange properties of rotating bodies- based on a famous experiment by the great physicist James Clerk Maxwell. When this bell shaped brass top is spinning an interesting stability can occur- push on the stem with an object and the top will push back, forcing the stem against that object, and friction will cause the stem to roll along and trace the edge of the object. In this design the stem will trace along