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I purchased a pocket-gamma spectrometer last week (Radiacode 102) and brought it with me to a local flea market to find some radioactive antiques! I also found a radioactive gimbaled compass in a box, but did not buy that one....
I recently found out that 10 000 Muons are hitting every square meter of Earth a minute. They are created by high energy collisions in our upper atomsphere that then fly at nearly the speed of light down to earth and survive even though they have a short half-life because of relativistic effects slowing down their decay....
Good Morning Chernobyl Nuclear Power Plant
