In 1975, our physics teacher said he'd been a consultant to the international group who was working on electric utilities and import/export of energy across the

In 1975, our physics teacher said he'd been a consultant to the international group who was working on electric utilities and import/export of energy across the US/CA border. Trying to define what "electricity" actually was! :) Electric circuits are much like drive-belts, but using charged particles rather than rubber or leather. If a drive-belt extends across the border between two countries, what is being transported? It's not mass, since for every KG of rubber belt going out, an exactly equal amount is coming back. (Go further and use rotating shafts. Then the mass just spins in place, and doesn't actually cross the border at all.) With circuits, with AC, the charges are just wiggling back and forth, and not proceeding forward. But with DC the charges are taking a closed circular path, so still are not proceeding forward. The thing which proceeds forward is radio waves. Sixty-cycle radio waves, forced to follow a waveguide composed of two or three conductors. EM waves are being sold to us by the utility companies. We live in a "radio-powered" civilization, but where the 60Hz EM waves are forced to follow waveguides, rather than leaping across empty gaps. Humorous "legal" chapter in Feynman: IS ELECTRICITY FIRE? https://www.reddit.com/r/atheism/comments/ev3gy/excerpt_from_richard_feynman_is_electricity_fire/ https://www.reddit.com/r/atheism/comments/ev3gy/excerpt_from...