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FS: Radioactive marbles!

I

im2smrt4u

Supreme [H]ardness
Joined
Jun 7, 2000
Messages
6,463
marbles_jar.jpg


I'm offering for sale some "radioactive" marbles. They are made with Uranium Oxide, which makes them glow under a blacklight. They are 5/8" in diameter.

My price is $5 per 10 shipped. PayPal me at im2smrt4u@yahoo.com if you'd like some. I have Heatware under im2smrt4u.

EDIT:

Time for a Special Deal!

marbles_jars.jpg


One of the above jars, with a large Radioactive sticker already affixed, containing exactly 200 marbles for $75 plus shipping. That is $25 off the normal price, plus a free jar. Plus, I will throw in a smaller Radioactive sticker free! :D

I only have these two, but if they both sell, just call dibs and I'll try to put together more.
 
those are pretty sweet, are they made of glass? or is it a different substance?
 
compslckr said:
those are pretty sweet, are they made of glass? or is it a different substance?
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They are glass with a little Uranium Oxide.
 
Mizugori said:
paypal sent, ill take ten :)

damn im going to have some fun with these
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Cool. I've get them packaged and shipped ASAP. (they will probably ship Thursday)
 
notoriousformula said:
Holy moly Batman! are you sure there is no alpha/beta/gamma coming out of those ;)

bump for you!
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There is just a little, about 200 cpm, radiation coming from them.
 
hmmm so if you duct taped a few to your arms how many years would it take to get a good-sized tumor going?
 
MX2times said:
just blowing me off or what;)
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I thought it was a joke! I guess you could, if the superglue sticks to the glass. I would guess you'd need epoxy...
 
guys, its uranium oxide, meaning it has lost much of its radioactivity by bonding with oxygen atoms. now, it is also in trace amounts, meaning you can eat the thing and you'll still be fine.


NOTE: Rayman2k2 advises not to eat anything that Rayman2k2 advises to eat.
 
rayman2k2 said:
guys, its uranium oxide, meaning it has lost much of its radioactivity by bonding with oxygen atoms. now, it is also in trace amounts, meaning you can eat the thing and you'll still be fine.


NOTE: Rayman2k2 advises not to eat anything that Rayman2k2 advises to eat.
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Yep, but they still glow like you wouldn't believe!

marbles_all.jpg
 
rayman2k2 said:
guys, its uranium oxide, meaning it has lost much of its radioactivity by bonding with oxygen atoms. now, it is also in trace amounts, meaning you can eat the thing and you'll still be fine.


NOTE: Rayman2k2 advises not to eat anything that Rayman2k2 advises to eat.
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^Bump for some cool marbles^

And FYI, Rayman2k2 just pulled that information out of his monkey's posterior. While he was correct that 'oxide' means there are oxygen atoms present, his knowledge ends right there. "Bonding with oxygen atoms" will not affect the radioactivity of a compound one bit.

Quick chemistry lesson:
Only Protons & Neutrons contribute significantly to the mass of an atom. Uranium has 92 protons in its nucleus and 138-147 neutrons, depending on which isotope you're looking at. 99.27% of all Uranium in the earth is U238 (146 neutrons) and .72% of all Uranium in the earth is U235 (143 neutrons). If you mine some Uranium, it will be 99.27% U238 (not radioactive) and .72% U235 (radioactive).

Since it only takes a very small amount of Uranium Oxide (UO2) to color glass (i.e., these marbles), and only a very small percentage of the Uranium Oxide contains U235 atoms, you will only see counts of 100-200 per minute. (typical background radiation (from space) in Anytown, USA is 30-100 counts per minute)

The fact that they use UO2 and not pure U does nothing to change the effective radioactivity of the Uranium used. Also, the correct way to use a geiger counter is to place the object ~1 meter away from your counter. Your reading will not be accurate if you touch an object to the geiger counter.

Lastly, it's not the radioactivity that makes these marbles glow. They glow because the glass has been 'doped' with UO2 molecules. The high energy UV light hits the glass & photons with the correct energy (for your particular marble) are absorbed, electronically exciting the doped glass. As the glass returns to it's ground state, lower energy (green) photons are emitted (This is called fluorescence / not to be confused with phosphoresence).

Hey, as long as I'm on a tangent here... When I was taking a 300 level chem class at UW (in 1997), we doped some zinc sulfide with a doping agent of choice - we had ~10 compounds to choose from, but one of them was Uranyl Sulfate {K2 (UO2)2 (OH)3 SO4} (naturally, I chose the Uranium containing compound! Plus, it's pronounced Urinal... so cool...) We added a small amount of the Uranyl Sulfate to the zinc sulfide and baked it in a tube furnace (1000C) for 20 minutes. The resulting compound glowed under UV light. I decided to keep it - it still glows under UV light today. But the cool thing about it, is it exhibits phosphorescence, not fluorescence - it continues glowing for 10 seconds or so after you remove the UV light. (triplet vs. singlet electronically excited state)

Ok, slight tangent there... but that's an even better reason to buy some radioactive marbles! You can use them as a conversation starter - girls dig guys who own their own Urinyl... er, I mean girls dig guys who understand the difference between phosphorescence & fluorescence... er, nevermind, just get some nuclear marbles.

Caleb
 
you have any of the jars for sale?? how many marbles to fill one???


thanx

MoFo
 
MoFo said:
you have any of the jars for sale?? how many marbles to fill one???
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The jar that is shown holds 300 marbles! :eek:

If you wanted to buy a whole jar full, I'm sure I could fine a jar. Plus, I will throw in a sticker or two. ;)
 
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