Magnetic Train
Dec. 1st, 2014 10:27 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
ffuturesPowerful rare earth magnets allow some interesting tricks - this one's a self-propelled "train" made of a battery and some magnets, running inside a copper coil. If I was working I'd probably want to try this, though I'm willing to bet it kills the batteries (which look like small camera batteries such as AAAA) fairly quickly.
