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March 28, 2011 06:33 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/8H34V_MXflA/pocket-geiger-counte.html
Pocket Geiger Counter
I've had this pocket geiger counter for a while, and I have not used it much. I took it out recently to check its battery just in case. The unit is made to check for radioactivity in industrial or geological uses, like testing scrap metal from unknown sources, old Uranium glazes on pottery, or possibly contaminated waste sites. The device clicks satisfyingly clearly when it detects three types of radiation. It's bigger than a pocket, but much smaller than the old fashioned vacuum tube variety. It runs off an 9-volt battery. This device is not sensitive enough to detect natural background radiation, or radiation drift in the atmosphere, or mild exposure on clothing, say. The device has to be very close to the radioactive source. It would have had trouble detecting the radiation during the accident at Chernobyl 500 meters outside of the plant itself. To measure the radiation in uranium ore, for instance, the device has to be just about touching the rock. Stuff has to be significantly "hot" to register, but this is the stuff worth worrying about....
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/8H34V_MXflA/pocket-geiger-counte.html
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