I don't know about others. For me this is just a new set of techno toys to get to know and play with!
My 18 yr old son recently not-so-patiently explained to me that alpha particles are stopped dead by just about anything. We were 'discussing' whether a nuclear bomb going off on top of a silo containing nuclear war heads would set them off... > On Mar 15, 2017, at 10:36 AM, NeonJohn <[email protected]> wrote: > > > >> On 03/15/2017 09:42 AM, Mark Moulding wrote: >> >>> On Tuesday, March 14, 2017 at 10:02:40 AM UTC-7, Paul Andrews wrote: >>> >>> What is your opinion of this one: >>> http://www.ebay.com/itm/Open-source-Geiger-counter-kit-nuclear-radiation-GM-detector-tube-radiation-/161447070168?hash=item2596fec9d8:g:gFMAAOSwcu5UN4Pk > > Glass GM tube equals low sensitivity. The thick walls, necessary to > withstand the partial vacuum, will stop most betas, what you're likely > to encounter in the environment. Gamma ray sensitivity will be low but > will be enough to detect the activity from a lantern mantle. > > To measure exposure, what you're really interested in, one needs a large > volume energy compensated geiger tube or an ion chamber. An ion chamber > is trivially easy to make - for years Victoreen sold an exposure meter, > the chamber of which was a styrofoam cup coated on the inside with > aquadag to make it conductive. > > A smoke detector is an ion chamber. A source is contained within the > chamber. combustion products absorb ionizations, reducing the ion > current and triggering the alarm. > > If you're interested in hearing clicks, the tube used in the old CDV-700 > civil defense geiger counters will work. Very thin wall metal tubes. > Best is a pancake probe. About $140 from Ludlum and others. > > Look guys, this fear of environmental radiation is getting far out of > control. There is ZERO risk from anything radioactive in the > environment unless you happen to eat the hand off a radium watch dial or > an Am-241 source out of a smoke detector. Even then the risk would be > so low as impossible to quantify. > > The old and discredited linear, no threshold theory that says that any > amount of radiation is harmful is perpetuated because it has been > monetized. Lots of people are making lots of money "remediating" low > level radioactivity. > > The evidence is overwhelming that low level radiation is actually > beneficial. No different than chemical toxins such as arsenic or zinc > or chlorine. Vital trace elements but toxic in higher concentrations. > This theory is called "radiation hormesis". > > Here is an article I wrote during the Fukushima accident that explains > the difference. > > http://www.johndearmond.com/2011/04/23/fukushima-the-high-cost-of-the-lnt-theory/ > > A Geiger counter is a fun thing to have around if it is sensitive enough > to detect anything. I carry a pocket unit with the pancake probe's > window facing outward any time I go yard saleing, attend auctions or go > to antique stores. I collect radioactive materials and I've hit some > bonanzas > > I especially like to lay the counter on top of some radiophobe's granite > countertop. The unit goes off-scale on the X1 scale. Granite is quite > hot on the environmental activity scale. > > As I demonstrate on my nuke page that I already posted, so is wood ash > from the fireplace. > > We need to nip this radiophobia in the bud and worry about something > that matters. Like how many Nixie tubes Dalbor can make :-) > > John > > > -- > John DeArmond > Tellico Plains, Occupied TN > http://www.tnduction.com <-- THE source for induction heaters > http://www.neon-john.com <-- email from here > http://www.johndearmond.com <-- Best damned Blog on the net > PGP key: wwwkeys.pgp.net: BCB68D77 > > -- > 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/Li4o6ZDVBc4/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send an email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/0a81e938-2911-18cf-5ac6-5702bf8ddb3f%40neon-john.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/37B6A50F-F009-4202-9008-4FD8E2D294B1%40gmail.com. For more options, visit https://groups.google.com/d/optout.
