Magnetic Equilibrium Pen: a weighty and elegant wooden writing pen dances and stands up on its tip when released, trapped against gravity by magnetic fields. Magnetic viewing film reveals the shape of the field from the strong neodymium magnet in the base, and that of the magnets embedded in the pen. The strength and geometry of these fields allows the pen to stand on its tip even when the base is tilted! Some fantastic physics for the desk top. ➡️ Follow the link in my profile for info on where