Make: Online : Three magic metals

Three magic metals

Make 612
Producing cold with electricity and a "Quicksilver Heart" that beats - from Popular Science 1936...

You are accustomed to seeing an electric element in a toaster or radiant heater grow red-hot when current passes through it--but did you know that when electricity flows through joints of certain metals, it produces a cooling effect? Have you ever made a drop of murcury behave as if it were alive or prepared a pair of magical alloys that are solids when separate, and a liquid when mixed?
These are a few of the fascinating experiments that you can perform with metals, using three in particular that you may not have employed before in your home laboratory--mercury, antimony, and bismuth.

Modern Mechanix » Three Magic Metals - Link.

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