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 Post subject: how to detected irradation stone using without Geiger Counte
PostPosted: Mon Apr 09, 2007 10:29 pm 
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Location: Pakistan
Hi to all member
some body asked me that how to detected the irradation stones without using
Geiger Counters. I replyed the used uv lamp. I do not know that I am right wrong.
Can any one solve this problem. what is the minim range which is not dangerious for health.

with best regards


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PostPosted: Mon Apr 09, 2007 11:13 pm 
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Radiation can NOT be detected without a Geiger Counter.
It is a silent killer.


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PostPosted: Tue Apr 10, 2007 12:28 am 
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If you have access to a photographic darkroom, you can lay the suspect stones on a piece of sheet film or photo printing paper. Direct contact is best ie put the paper and the stones together inside a lighttight black envelope.(alpha rays will hardly penetrate anything and betas arent that strong either. Even a layer of thick black lightproof photo paper will reduce them. Not usually gamma though)
Let the stones sit for a day or so then develop the film or paper. If there is radioactivity present it will leave an image of some kind on the film. If it leaves an image then do further tests with a Geiger counter or scintillation counter or something else operated by someone who knows how.
There is no safe level of radioactivity for optional things like jewelry.

This was how Becquerel discovered radioactivity down the hall from the Curies. No I wasnt there :D


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PostPosted: Tue Apr 10, 2007 3:28 am 
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G4Lab wrote:
There is no safe level of radioactivity for optional things like jewelry.


I think that's a bit extreme. If we're talking about levels in the range of normal background radiation, I wouldn't be concerned.


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PostPosted: Tue Apr 10, 2007 1:44 pm 
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We're exposed to higher levels than that in simple day to day activities.
It's the high residual traces we need to look out for.


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 Post subject: Re: how to detected irradation stone using without Geiger Co
PostPosted: Thu Nov 14, 2019 3:19 pm 
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Joined: Sun Feb 25, 2007 12:44 pm
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Location: Dallas, Texas
We test stones that are NOT found in nature (London Blue Topaz) which is created by exposure to a rector. Place a new sheet of b&W film sheet under stone with black side up. after talking to salesman open the sheet of film. If there is an image IT IS HOT. We use black and white films, because the are better than color. Can be found at Edmund or scientific suppliers. Danger to the customer who wears item in ring, pendant,etc.


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