All over America motors make noise, rumbles, reverberations, humming. Electromagnets, armatures, windings of copper. If I think long enough I can tell you the whole point and purpose of all that, the physics.
Edison, Tesla, Herz, Faraday, Volta, Ohm, Galvani, all the gang.
But for now, I just hear the motors, then the gongs, now the train horn as I watch the Silver Meteor pass through Ashland in the sodium vapor light.