Citazione:
|
Originalmente inviato da ron_van_sommeren Something you can try yourself. Just let a Neodymium magnet slide down a metal tube or a length of angled metal and then let it slide down a plastic tube and see the difference. |
This will of course not work with iron, the magnet will just sit up there happily until the end of the universe
It has to be non-ferrous metal.