2012 m. kovo 24 d., šeštadienis

inside si29bg ( СИ29БГ )

I had one faulty geiger tube which I decided to open to see what's in there.
Internal surface of anode (the rod in the center) and cathode (the external shell) looks covered with some kind of powder. The construction looks extremely sturdy in comparison to what I have seen inside other tubes.





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