This is an interesting bit of history that is new to me. It seems Niépce de Saint-Victor investigated the phenomena of radioactivity 40 years before Henri Becquerel discovered it. http://en.wikipedia.org/wiki/Abel_Niepce_de_Saint-Victor<http://www.facebook.com/l.php?u=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FAbel_Niepce_de_Saint-Victor&h=QAQEnGjCXAQGwAvziNjNjHyAdxJZI8p-n684LAs-ph2bDoA&s=1>
Harry
