a closer look at americium 241 from a smoke detector

in this video, i disassembled a smoke detector to show you the properties of americium 241, the second nuclide in the neptunium decay chain. yeah i know i used some 'wrong' words, ie. could've used more fitting words to describe stuff at times, but i did this freestyle and being rather tired - hope you like it anyway, even with the mobile phone annoyances inbetween, too. ;-) also, there's four major decay chains, but only three naturally radioactive ones - neptunium is the artifical one. sorry about that!