TIL that the electricity-generating ‘dynamos’ on bikes are actually called magnetos because they output alternating current. by whatilearned May 7, 2021, 2:10 am Read more: https://en.wikipedia.org/wiki/Bottle_dynamo What do you think? 12 Points Upvote Downvote alternatingbikescalledcurrentdynamoselectricitygeneratingmagnetosoutputTILToday I learned See more Previous article What is it about processed unhealthy food that makes it so dam hard to give up? Next article TIL about pinball prohibition, pinball was banned in most major cities from the early 1940s to the mid 1970s because it was considered a game of chance and therefore gambling. 4 Comments Leave a Reply TIL as well, I guess I always figured these were just a DC motor being used as a generator. Log in to Reply I hated those things, it was like you were always climbing a hill. And no light when you stopped. Log in to Reply AC/DC called and confirmed that was news to them… Log in to Reply Basically the breaks on all hybrid and electric cars. Log in to Reply Leave a Reply Cancel replyYou must be logged in to post a comment.