Am-241foundintheenvironmentisintheformof microscopicdust.Am-241usedinindustrial,medical,or commercialdevicesisintheformofcoin-sizedmetalor plasticdiscs.TheAm-241sourcepresentinasmoke detectorisinsideametalcylinderthatisaboutthesizeofa pencilerasure. Whatdoesitlooklike? Am-241isasilver-whitemetalthatissolidunde...