Mine is a GK Mini with a SBM20 tube. Background with it is about 20 CPM. > On Oct 26, 2020, at 6:12 PM, Mac Doktor <[email protected]> wrote: > > >>> On Oct 26, 2020, at 5:35 PM, Nick Andrews <[email protected]> wrote: >>> >>> Haha, the radium is the one that makes me nervous. Tritium, Kr, etc not so >>> much! Just watched Radioactive on Amazon (I think) about Marie Curie. A >>> little slow but not bad. >> >> >> I read somewhere that the Curies would go out to their workshop after dark >> and just stand there watching the entire room glow. There were glowing rings >> on the shelves where bottles had been sitting at some time in the past, who >> knows how long ago. >> >> > >> On Oct 26, 2020, at 6:00 PM, Paul Andrews <[email protected]> wrote: >> >> I have a couple of old alarm clocks with radium dials. My Geiger counter >> goes crazy when it’s next to them. >> >> I also have some Uranium glass glasses and was surprised to get about 20-30 >> times background off of them. > > What kind of GM tube is in it? My entry-level scintillator gives me a > background of ~1150CPM at 900V. > > > My dad had prostate cancer a while back. They implanted something with a > half-life of two or three weeks. I checked him every half-life to confirm > that the count had in fact decreased exactly 50%. 8D > > > Terry Bowman, KA4HJH > "The Mac Doctor" > > Q: Should car stereo speakers be pointed to the rear for more thrust or up > for more traction? > > A. On long trips, the 20- to 30% improvement in gas mileage you might get > with speakers pointing to the rear is certainly worthwhile. On the other > hand, if you drive on snow or ice, the extra traction of speakers pointing > upward gives you added control. > > Don Lancaster > > -- > You received this message because you are subscribed to a topic in the Google > Groups "neonixie-l" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/neonixie-l/BL83MEnFSbA/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/A1A1E624-DE2B-4946-942D-58D48D37EA53%40gmail.com.
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