Demonstrates how electric current can be used to generate very strong magnetic fields. This two-part. dissectible electromagnet comprises a core and a yoke, with their mating surfaces precisely machined to very close tolerances. The core has a cylindrical coil wound with enameled copper wire on annular insulated bobbin, with both ends of winding terminating in crocodile clips. Back of the core has a cell holder that can be connected to coil using crocodile clips. Both core and yoke provided with steel eye-bolts. Generates tremendous lifting power.