/oss/taxonomy/term/3498/all en /oss/article/you-asked/why-do-i-get-jolt-pain-every-time-i-chew-piece-aluminum-foil <p>The common link among those who experience pain is that they have amalgam fillings. These are composed of a mixture of tiny particles of tin, silver and copper alloyed with mercury. Anyone who has such fillings may have learned the hard way that dissimilar metals that come into contact can generate an electric current.  Basically, they have reproduced one of the most famous experiments in history, that of Alessandro Volta’s discovery of the battery.</p> Thu, 08 Nov 2018 19:20:52 +0000 Joe Schwarcz PhD 7439 at /oss