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CDV700CLUB · The CDV 700 Club is a forum for like minded individuals that enjoy collecting, fixing up, and using geiger counters and other r
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Messages 16097 - 16126 of 27218   Oldest  |  < Older  |  Newer >  |  Newest
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16097
A week or so ago, I conducted a little experiment to see if a hot sample of uraninite would alter the growth pattern of ....ahem.....a small patch of mold on a...
Phil Bigelow
phillip_bigelow
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Mar 1, 2005
8:59 am
16098
Haha! Thats a neat experiment. Perhaps the mold is resistant. Might have to do it longer. If you had a 10 uCi Cs-137 disk it might work for ya :) ... ...
George Williams
stringtheory...
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Mar 1, 2005
10:18 am
16099
Go with what Marshall stated. REM stands for Roentgen Equivalent Man. A Roentgen is a gamma or X-ray measurement only. If your counts where all gamma...
Chris Cavanaugh
night427
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Mar 1, 2005
12:54 pm
16100
FWIW, I've bought several bags of Brazil nuts and have seen no count increase with my pancake probe. I even took my blueQ to the local grocery- no indications....
Bill Beamon
kd4fnc
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Mar 1, 2005
1:20 pm
16101
Any "thin window" geiger tube will give an accurate COUNT of alpha particles. The alphas lose some percentage of their energy in the window (and in the air)...
Craig
siliconhillb...
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Mar 1, 2005
3:49 pm
16102
Be very careful, it has been know that Gamma radiation mutates mold into a giant black cheese-seeker mold-monster. Better put a padlock on you 'fridge just in...
Geo
K0FF
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Mar 1, 2005
3:56 pm
16103
Bill,a few posts back one of fellows I belive it was Tracy, did a test with Brazil nuts and found a increase of activity, but he ground the brazil nuts up like...
RadioActive
radioactiveb...
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Mar 1, 2005
5:26 pm
16104
HI, a very smart chemist once told me MOLD was OLD ........ Jim..OD ... From: "Geo" <GEOelectronics@...> To: <CDV700CLUB@yahoogroups.com> Sent:...
RadioActive
radioactiveb...
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Mar 1, 2005
5:29 pm
16105
Got a web address? ... From: chernobyl_87 To: CDV700CLUB@yahoogroups.com Sent: Monday, February 28, 2005 11:11 PM Subject: [CDV700CLUB] Government Liquidation...
boomologist
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Mar 1, 2005
5:34 pm
16106
It's a work in progress. Paul has over 400 radioactive minerals listed on his CD. I'm sure he just hasn't had time to put it on the web site. I see there are...
boomologist
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Mar 1, 2005
5:34 pm
16107
The mR/hr vs. CPM ruckus is as old as the hills. CPM is a universal language common to all -pulse output- detectors. I prefer it. If I know the capabilities...
John Boyle
farvergnugen...
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Mar 1, 2005
6:03 pm
16108
I'm glad you posted this message, Marshall! This is a good "for instance" in my defense of and the usefullness of the CPM scale! Armed with this information,...
John Boyle
farvergnugen...
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Mar 1, 2005
6:13 pm
16109
I agree, I myself don;t have the time or inclinatio to try to keep all the variuos units straight. CPM, absorbers, and KNOW your probe. Geo ... detectors. I...
Geo
K0FF
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Mar 1, 2005
6:41 pm
16110
... You've obviously never been troubled with serious static cling or lint issues. Anti stat are also used in web roll industrial processes (process paper,...
DH
revtkatt
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Mar 1, 2005
7:21 pm
16111
Sure 'nuff, Geo... Hobbyists can get virtually all the info they may need (and then some) with a 700, the stock hotdog probe, and an add-on pancake probe. ...
John Boyle
farvergnugen...
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Mar 1, 2005
7:34 pm
16112
... Actually that is the "MicroREM" to which you are referring. Most manufacturers "MicroR" instruments just use ordinary NaI(Tl)....
J. Marshall Reber
groschen1936
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Mar 1, 2005
7:35 pm
16113
Correct you are, Marshall. And I didn't even look at the one sitting on the bench less than six feet away from me. Gosh, it's printed in white on black right...
John Boyle
farvergnugen...
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Mar 1, 2005
7:54 pm
16114
On Tue, 01 Mar 2005 18:41:29 -0000 "Geo" <GEOelectronics@...> ... "Know your probe". I think that was an old U.S. Army hygiene film. <pb> --...
Phil Bigelow
phillip_bigelow
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Mar 1, 2005
8:07 pm
16115
... No, no, I don't believe it. That's bad! On the other hand, Old Timers, good - valuable experience, percolated wisdom, deep insight, bulging intellect,...
J. Marshall Reber
groschen1936
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Mar 1, 2005
8:34 pm
16116
Yeah, I guess you are right. I never used the product so I shouldnt pick on it. I would just think there is a better way to do it. Seth ... ...
Seth Martin
chernobyl_87
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Mar 1, 2005
9:00 pm
16117
Well, You could throw in, RAD = Radiation Adsorbed Dose = 10 ERG,s Per Gram of Adsorbing Material, 1 ERG = 10.00E-7 Joule Roentgen = r = An Exposure to...
Tracy Albert
thealbert1
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Mar 1, 2005
9:11 pm
16118
ROFL! Oh how I love a good belly-rub. Feels good. Keep it up! :-) ..jb ... From: "J. Marshall Reber" <jmarshall.reber@...> To:...
John Boyle
farvergnugen...
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Mar 1, 2005
9:54 pm
16119
I see alot of responses to this post, good. I havent read them all yet, but I will respond anyhow. I am still VERY confused. This is what i picked up from a ...
George Williams
stringtheory...
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Mar 1, 2005
10:54 pm
16120
... Per Gram of Adsorbing Material, 1 ERG = 10.00E-7 Joule ... of Gamma or X-rays required to Produce ion,s, Carrying an electrostatic unit of electrical...
DH
revtkatt
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Mar 1, 2005
11:07 pm
16121
Alright, agreed. I understand what you are saying. It is why i started this out saying it would vary depending on all that you listed below. Perhaps its not...
George Williams
stringtheory...
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Mar 1, 2005
11:09 pm
16122
Ok, can you all clarify. Are you saying that the average annual dose people recieve, DOESNT include alpha, or beta radiation at all??? ... ...
George Williams
stringtheory...
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Mar 1, 2005
11:14 pm
16123
Hey Sethmiester! Don't knock my new (CHEAP) sealed alpha source! 36 bucks for a 500 microcurie source, cant beat that. Too bad it will all be gone in a few ...
George Williams
stringtheory...
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Mar 1, 2005
11:20 pm
16124
Further note: I noticed something about the ability to ionize, particularly for gammas, mR/h ?? Ok, fine. Cannot alphas ionize too? And betas? Wouldnt there be...
George Williams
stringtheory...
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Mar 1, 2005
11:23 pm
16125
Yeah, after 1.13 years you would have around 30 uCi Now I suck at math so that might be wrong, haha Seth ... ...
Seth Martin
chernobyl_87
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Mar 1, 2005
11:33 pm
16126
... No, John, that's OLDTIMERS disease you're thinking of ;-) Craig (now why did I come to this room?)...
Craig
siliconhillb...
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Mar 1, 2005
11:34 pm
Messages 16097 - 16126 of 27218   Oldest  |  < Older  |  Newer >  |  Newest
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