Paul, You might be measuring the fire bricks. My father in law's fireplace runs 20uR/hr without any logs or ashes in the fireplace. The fire brick apparently...
My woodstove has no fire brick, and is measuring very near pauls reading with my belvar, With a PRI 111B its reading 0.018 ur/hr with the alpha counter 23 CPS...
K40 does a beta decay, there is a gamma emitted as well. ... Chris Smolinski Black Cat Systems http://www.blackcatsystems.com/ Macintosh Software GM-10...
Just surfed ebay and found something rather scarey. It looks like some kind of irradiator core and a nasty one at that! The seller vehimently denies that it is...
For everyone's information, here is my "question to seller". Let's see what he says. "Do you realize that if the CDV-715 is correct (you're not trying to hype...
I get 18 uR/hr from an OLD 1986 television. One of the nice things about this little exercise is that it concentrates the dirt into a small area. In an old...
What in the hell!?!?! I wonder what the blue thing is supposed to be? Let's just imagine for a minute that the thing is really pegging an accurate 715 on the...
Dear God... The guy says in his description it's measuring "lower" than background. Amazing, when a CD V-715 is pegged out on the X100 scale. This means he's...
... Hmmm.... I have my trusty old 1978 Zenith in the basement. It was in daily use from 1978 to about 1996 and then sporadically to this day. It ought to be...
... Am I the only one who read it as a joke? He says it reads less than background and then suggest some "fun uses" and shows a pegged radiation detector....
LOoks like the guy has a scintillation crystal sitting on the item. It's glowing blue! LOTS of gamma photons. Scary indeed and probably not legal if it can...
It's possible, but I doubt it. I believe what he means is that there is less than background radiation being read inside the shielded container without the...
Guys, The guy says it a prop. That means fake, and the reading is likely caused by a battery and a pot wired directly to it. Fer chrissake, he's wearing a...
Jack Herron
jherron@...
May 2, 2003 2:15 am
7804
I don't see the ebay listing as a joke. Perhaps it is. I hope it is. However reading the auction listing, it sounds as if he is selling a Cobalt source and...
According to "Experimental Gamma Ray Spectroscopy and Investigations of Environmental Radioactivity", "Dogwood trees are known to concentrate large amounts of...
This guy has sold a few radium painted meters, he has a standard geiger counter as is shown in his past auctions, so he probably read the background using a...
Well in hind sight i think it is probably a joke as the guy is still responding and cobalt produces nasty gammas that can zip throgh an x- ray vest like a...
A CDV700 will *saturate* and read zero in the presence of cobalt 60. -Charlie ... read ... seen ... it ... the ... how ... high ... X- ... like ... seller ... ...
I, too, have emailed him with some "non-threatening" questions. If he does respond I would guess it is fake because by now he would be too sick to reply. If it...
... I think that depends on the dose. I use a 1 uCi Co-60 source and 1/4" of lead as a source to calibrate GM probes. Most all probes are now rated in terms of...
Looks like it is fake. I received a reply from him: "It's the only one. Also, please read the description more carefully. It measures lower than background" ...
George, ANY gamma source that makes a scintillator crystal *glow* visibly blue is guaranteed to saturate your CDV700. That's a huge number of microcuries....
hmm, well I was responding to the fact that in it's shielding he probably used a cdv700 to test to see where it was compared to background, tho it's a bit...
Erik, But first you have to live where there is rain. In this part of Texas we have no Dogwoods trees. They are pretty in the spring...I grew up with them in ...
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