“But there’s something about Watonka, they say. Something that pulls us back, the electromagnet that holds all the metal in place” — Sarah Ockler Copy Share Image
“When I tried to show him how an electromagnet works by making a little coil of wire and hanging a nail on a piece of string, I put the voltage on, the nail swung into the coil, and Jerry said,… — Richard P. Feynman Copy Share Image
