A piece of wire is artistically bent in the shape of the characters 'I (c) U'. The wire can be deformed by the experimentor. The wire is more or less stretched out or bent on other places.
Caution: don't make the wire too sharply curved, as it will become totally unusable.
After deformation, the place the wire in a tray containing warm water.
Observe how the wire, almost immediately after touching the water, returns to its former shape.
The wire is made of a special alloy, named Nitinol, consisting of nickel and titanium.
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