Canadian quarters (which have some iron in them)
are picked up by a magnet, and heated by a torch. As each quarter heats up
to its curie point, it falls off the magnet into a container of water below.
After the quarter enters the water which cools it down, it can be picked
up again with the magnet.
This demo can be found in cabinet F on shelf 3 of the UCSD PUL Demo Room
(WLH 2015).