... <snip> ... Think about this in reference to the LNT model for health risk from radiation exposure. All health related exposure guidelines are produced...
... look ... side ... I have just recently read this book and want to voice my own concerns. I had to wade through the PC or contemporary bias of the reporter...
Someone wanted to see what the insides of a pancake probe looks like. Here it is. The cathode part is the metal can , machined from a solid steel blank and...
I received the Victoreen Model 6B today and it appears to function perfectly. It even has a calibration record from 1971 through 1991. The 6993 tube works in...
Mike, did you remember to include a 3.3 million Ohm resistor in series with the 7311? Geo ... 1991. ... tube ... tube ... Geo's ... modes ... yet to ... let it...
Bummer. I have yet to see a dead 7311 that did not have a leak. Any GM tube with a little air in in will discharge continuously. If it is all air inside, they...
I just bought a watch hand on ebay that is supposed to be pretty active. My thirteen year old and I plan to grow a little Radon and see if we can predict the...
I'm replacing C6 to hopefully cure the squeal that my ENi has. How close do the values have to be for C6 and C1? I've got 22uF and 220uF electrolytic caps in...
... You might also find that eg carnotite rocks are cheaper sources, since Ra watch hands are somewhat expensive. Carnotite is good because its powdery which...
... or ... I fear that one hand may require long observation or collection times, but 1. Put it in a sealed container and measure rad over several days. For...
... One more idea.. Get a magnifying glass and sit in the dark for 10 minutes with the hand. You may be able to see scintillations. Each is the result of an...
Another experiment would be to observe the radium hand in a dark room, with a magnifying glass, or even a microscope, using it as an impromptu spinthariscope....
This may be politically incorrect, but I have disposed of papers (placed over the desktop) and rubber gloves in my home trash. typically there isn't any...
Bad boy! Bad, bad boy! ... (placed over the desktop) and rubber gloves in my home trash. typically there isn't any contamination, but it is a good idea for the...
Sorry, Yucca flats didn't accept them (the gloves)! Chris Cavanaugh cav427@... Yukon, OK ... From: Geo To: CDV700CLUB@yahoogroups.com Sent: Monday, June...
Thanks for the project ideas. I already bought one of Geo's Zinc Sulphide Screen cards so that one is on my list. I am really hoping to capture enough Radon...
Your #3 sounds particularly interesting. I hadn't thought about combining a shock hazard with my crumbling Radium. Any idea what you are collecting on the...
I wouldn't worry two much about crumbling, unless you see it! It is a possibity, considering the last radium dialed watches clocks were produced in 1965. I...
... The shock hazard is minimal, but you could hurt yourself when you react to it. TV repairmen used to flay their arms on sharp metal parts if they touched a...
Greaaaattttte! I walk by my torbernite sample with my cell phone and a swat team invades my home! Hope they can be turned off, or used by us. Chris Cavanaugh...
DHS already has them.... Independently, over the last year, I have been researching the integration of radiation detection, data logging, and GPS positioning...
Thanks for such a descriptive answer. I think I understand it. I peeked at the U238 decay chart and there is quite a collection of both alpha and beta...
http://www.forbes.com/business/2007/06/05/nuclear-russia-weapons-biz- cx_0606oxford.html Nuclear weapons must be made from one of two substances: highly ...
Has anyone had a chance to play with Lanthanum Bromide, Cerium activated LaBr3(Ce)? It is a newly developed scintillator material that is probably only...
grrr! Here's a reformatted specifications comparison chart: ...........................LaBr3(Ce)......NaI(Tl) Density (g/cm³)............5.08...........3.67...
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