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 Replies: 37 / Views: 6,512 |
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Valued Member
Canada
118 Posts |
Any one got result? Stud722, Poboxw?
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Pillar of the Community
United States
1088 Posts |
No word yet, trying to get the "okay" from higher ups to make sure it is alright to bring it into the lab
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Valued Member
 Canada
153 Posts |
Thanks stud722!
It's very important and interesting~
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Valued Member
Canada
118 Posts |
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Pillar of the Community
555 Posts |
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Pillar of the Community
United States
1088 Posts |
having a rough time finding the right guys to talk to since I work at a university lab and it is summer semester. a lot of the people are not working through the summer. I will keep you updated if I get any info.
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Valued Member
Canada
451 Posts |
A gamma spectrometer will do the trick. Any XRF lab will have a dozen of them. McMaster University, Guelph, Western.... There are also several commercial labs that would do it for fun. It would take all of 5-20 minutes to determine the isotope present. If anyone lives close to McMaster University, just call MNR, they would do this instantly.
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New Member
United States
27 Posts |
Can a radon test check how radioactive the coin is?
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Valued Member
Canada
451 Posts |
^You can try, but home Radon detectors may only test for Alpha particles, depends on the model. If the glow in the dark paint is actually active above background levels, it is most likely a beta and gamma emitter. My guess is that you won't be able to see anything with a basic home radon detector.
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Bedrock of the Community
United States
10045 Posts |
I can pretty much guarantee that nothing sold to the public (without strict controls)--a painted coin or otherwise--emits gamma rays. Smoke detectors don't even emit beta radiation.
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Pillar of the Community
Canada
981 Posts |
there's nothing to find anyways
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Pillar of the Community
Canada
590 Posts |
Quote:
I can pretty much guarantee that nothing sold to the public (without strict controls)--a painted coin or otherwise--emits gamma rays. Smoke detectors don't even emit beta radiation. It is possible a Tritium based paint was used. I have never seen a photo luminescent paint that was see through. Generally a photo luminescent paint is white or greenish in color. Tritium particles could have been mixed into the paint on the dino coin to create the glow in the dark effect. A coin painted with Tritium would meet the exposure limit for exposure absorption. Tritium is not banned for sale in North America and can be found in products we can buy everyday. Self-powered lighting Watch with tritium-illuminated face The emitted electrons from the radioactive decay of small amounts of tritium cause phosphors to glow so as to make self-powered lighting devices called betalights, which are now used in firearm night sights, watches (see Luminox for example), exit signs, map lights, and a variety of other devices. This takes the place of radium, which can cause bone cancer and has been banned in most countries for decades. Commercial demand for tritium is 400 grams per year and the cost is approximately US $30,000 per gram More info on Tritium: http://community.seattletimes.nwsou...slug=1481417http://www.youtube.com/watch?v=fCoXwFv-xOU |
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Bedrock of the Community
United States
10045 Posts |
Fortunately, tritium isn't a gamma emitter either. Most likely, the glow paint is based on Europium; it's totally safe and used in consumer products. But I'm only guessing--I'm sure the RCM knows. |
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Pillar of the Community
Canada
1581 Posts |
The coins don't glow constantly. Like standard glow-in-the-dark they are energized by a light source, and the glow decays over a period of time.
Out of the box, at delivery, they are dark. And will go dark again if kept out of the light.
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Pillar of the Community
Canada
2427 Posts |
The reason for the mint posting notice of inferior product is simple.
The original first batch of Dinos that were sent out are perfectly fine. No need to worry!
The mint sends these coins out for the colouring process and when the second large batch of them came back to the mint, their Quality Control Team noticed problems with the colouring therefore they held back all the coins.
This means that the mint had to mint new coins and send them out one more time for colouring. Once these coins are coloured, they go back to the mint and the Quality Control team will inspect them one more time. Once the coins pass the mints inspection then they will be distributed to their respective buyers.
This is why some of you have still not received your coins.
Just a thought!! Once these coins are released I think we should check our Dino's to see if the mint slips up and sends out any of the defective batch!
It wouldnt be the first time the mint messed up!
Edited by darryldarryl
08/05/2012 11:05 am
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Replies: 37 / Views: 6,512 |
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Posted 07/15/2012 7:40 pm
