"Nuclear source materials" (presumably fissionable isotopes, e.g., uranium or plutonium) are not capable of being deadly over a broad area. They are pretty much limited to being dangerous from physical contact, if even that.
Some clever entrepreneur should figure out a way to manufacture a Geiger counter that is no larger than a cell phone and available at a reasonable price. If the counter is silent, there is no problem. (By the way, Mother Nature is radioactive. There is a background radiation level, everywhere, from soil and cosmic rays. We wallow in it.)
Most excellent! But they are wrong in saying it would not be suitable for a "critical" situation. In critical situations you must make do with what you have at hand, as time is often of the essence.
"Nuclear source materials" (presumably fissionable isotopes, e.g., uranium or plutonium) are not capable of being deadly over a broad area. They are pretty much limited to being dangerous from physical contact, if even that.
Some clever entrepreneur should figure out a way to manufacture a Geiger counter that is no larger than a cell phone and available at a reasonable price. If the counter is silent, there is no problem. (By the way, Mother Nature is radioactive. There is a background radiation level, everywhere, from soil and cosmic rays. We wallow in it.)
They made a detector phone in Japan a while back.
https://archive.is/E73mq
Most excellent! But they are wrong in saying it would not be suitable for a "critical" situation. In critical situations you must make do with what you have at hand, as time is often of the essence.