that kinda made some history for thscientis succeed in deliberately changing one element from oneind tonother. artificial transmutation. at only occurs with nitren? that occurs with-- this is the historic one. now, you do it with all kinds of things. every time you slam particles down the end of an accelerator, you cause atomic-- nuclear transmutation. it's routine today. it's just that this historically was the first one that people were able to observe. that's artificial transmutation. slam nuclei into others and you rearrange them. that rearrangement process is called transmutation. paul. so what you're saying is today we can change lead to gold? yes, we can change lead to gold. would it stay that way or-- and the cost of doing that will not be economical. but would the stuff stay that way - or would it be unstable? - oh, yeah, yeah, yeah, yeah. you can-- yeah, lead to gold, yeah. yeah. any another questions? you said they took some pictures. how did they do that? photographs. cloud chamber photograph. i won't take the time to talk about cloud chamber photographs, but did you ever look up