Fun with magnets

[G7PSK]

Came across this today and thought I would share as its fun.

https://www.youtube.com/watch?feature=player_detailpage&v=5BeFoz3Ypo4

[saturation]

Lenz's law, a crowd pleaser.

[Terabyte2007]

I have a couple large Neodymium's and there are all sorts of cool things you can do. I keep them stored in a safe place far away from other sensitive objects. I have done this with solid 2 inch thick copper plates at a 45+ degree angle and allowed the magnet to slide down very slow. Kids love it!