A demonstration of
regelation:
You need:
- A big block of ice
- A thin, strong wire
- Two weights
Procedure:
Tie the
weights to either end of the
wire. Place the
ice in a location such that the weights can
dangle down over the sides of the
block. Place the wire atop the block and
wait.
Diagram:
+---------+
|+-------+|
|| ||
|| ice ||
|| ||
|+-------+|
| |
O O
OOO OOO
OOO OOO
OOO OOO
After some
time, you'll find the wire is has
sunk down through the ice and is
embedded within it. The
ice above and
below the
wire will be solid - the
pressure exerted by the
wire has
melted a
path down through the
ice, and the
ice has regelled
behind it.