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PDA/Radiation Detector
sgpennebaker writes "This article tells of lab rats who've built a cell phone/PDA/GPS device that also lets you surf the web and, oh, yeah, sniff out any dirty bombs that might have gone off in your area. Then you can cancel your meetings, call family and friends and send GPS coordinates to whoever it is that cleans up afterwards. I'm waiting for the next generation; I want one that also tracks hungry, angry bears and emits a loud noise when it senses their proximity."
Depleted Uranium is not spent the fuel rods leftovers most people assume from its name. It is what is left over after extraction of the fissile material from refined Uranium.
Significant amounts of refined Uranium are stable isotopes. To get enriched Uranium you force the refined metallic Uranium through a series of filters that select the isotopes based on physical characteristics. Uranium ions in solution are large enough a special porous ceramic filter can pass the ions of the desired atomic weight. Using several passes with different sizes of pores you get the nice hot Uranium you need for bombs and such. One of the byproducts is a nice very dense metal, Uranium. Almost as hard as austenitic steel and much denser than lead. Not much hotter than the tritium illuminator sources in the standard issue compasses carried by infantry. The dust is however a mechanical poison that works much like ionic silver. Silver nitrate is just as dangerous a compound.