图1 L. Kadanoff:“Iceberg floating in the sea. This picture is intended to illustrate different phases of water. The sea is liquid water， which is then in contact with solid water in the form of ice. In the air above， breezes blow clouds through the air， which contains water vapor in contact with both the solid and the liquid forms of water. The change from one form to the next is termed a phase transition.
这个是一块强磁铁，这个是一个金条，金条受到了强磁铁得吸附影响。我这个小试验是简单再现了曾经得这么个新闻事件，一个顾客在金店买了个金条，回去发现磁铁可以吸引这个金条，然后请来记者找到商家，说这个金条是假得。
