KANSAS CITY, Mo. — National Engineers’ Week began in 1951 in conjunction with the birthday of President George Washington, who is considered the nation’s first engineer, and the celebra… ...

Yes, it is a homopolar motor, there’s no commutation. Use the right-hand rule for Lorentz force. Lay your palm out, with your thumb at a 90 deg angle to your fingers.

Little Magnetic Discs Turn AA Batteries into Self-Propelled Motors All you need is an AA battery, two magnets, and a sheet of aluminum foil. By Jay Bennett Published: Dec 07, 2015 2:39 PM EST ...