Teslas Egg of Columbus Exhibit

Here's an electrifying exhibit!
Nikola Tesla developed the Egg of Columbus for the 1893 Chicago World's Fair to illustrate how alternating current (or AC) electric motors work. The Ann Arbor Hands-On Museum exhibit was developed by Karl Dunkle-Warner for his Eagle Scout project, working with our own exhibit team, to reproduce Tesla's demonstration of a rotating magnetic field, one of his most applied inventions. When AC power is supplied, the egg, which is filled with steel wool, responds to the rotating magnetic field by spinning and, eventually, standing on end.