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Uranium Glass Marbles?

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Greenhorn

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If you have uranium marbles that aren't cracked, it's easy to crack them. Just heat them up with a propane torch or something until they're pretty hot (but not red-hot ), and then drop them in water. They will shatter but should hold together. I used to do that with regular marbles.
 





Switch

Switch

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Radium on the other hand... ::) They used to use that for all sorts of glowy stuff.I think they replaced it with tritium now, which is safer, but appart from the DX keychain, tritium stuff is always expensive. ;D
 
rocketparrotlet

rocketparrotlet

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Switch said:
Radium on the other hand... ::) They used to use that for all sorts of glowy stuff.I think they replaced it with tritium now, which is safer, but appart from the DX keychain, tritium stuff is always expensive. ;D
Click to expand...

DX tritium keychain? Where? I need!

-Mark
 
Kage

Kage

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Lots of vaseline glass on ebay, including sometimes "bottoms-up" shot glasses:
 

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Switch

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rocketparrotlet said:
[quote author=Switch link=1225337223/20#33 date=1225783639]Radium on the other hand... ::) They used to use that for all sorts of glowy stuff.I think they replaced it with tritium now, which is safer, but appart from the DX keychain, tritium stuff is always expensive. ;D
Click to expand...

DX tritium keychain?  Where?  I need!

-Mark[/quote]
Here you go: http://www.dealextreme.com/details.dx/sku.6830
The Tritium itself doesn't glow.The little glass tube is coated with Phosphorus or something and it glows continuously as the Tritium decays.It should actually have a half life of 12 years.They're selling it as 10 year glowy thingy.
 
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suiraM

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The really interesting question is what it would take to get the glass evenly doped, and have it cast as a ball lens, with 405nm antireflective coating. Sure, spherical aberration is unavoidable, but if the quality is okay, it will collimate a BR laser. You lose a fair bit of energy due to the fluorescence, but that is a small price to pay for the coolness of having a lens that glows green whenever the laser is on. Without AR coating and a smooth surface, the stray reflections might be unavoidable, though.
 
Switch

Switch

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suiraM said:
The really interesting question is what it would take to get the glass evenly doped, and have it cast as a ball lens, with 405nm antireflective coating. Sure, spherical aberration is unavoidable, but if the quality is okay, it will collimate a BR laser. You lose a fair bit of energy due to the fluorescence, but that is a small price to pay for the coolness of having a lens that glows green whenever the laser is on. Without AR coating and a smooth surface, the stray reflections might be unavoidable, though.
Click to expand...
LoL that would be awesome :D
 
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phoenix3200

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No, but if I start growing a third arm or my hair starts falling off, I'll let you know.
 
FrancoRob

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Ok! :D I'm not in wonder for the third arm, but for the hair.... they're just so few now..... :'(
This picture shows what we usually get due to cosmic radiation (1 mR/h = 10 mSv/h), I wouldn't be pleased to get more just for fun....
 

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Switch

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Don't worry about the hair, some people start loosing it at 25.It's perfectly normal and probably unrelated to radiation ;D

Does that counter say 0.07 or 0.01? Btw, that's pretty low according to the website. :p
 
FrancoRob

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The reading is 0.01 mR/h, and if this reading would be a constant value, it is NOT low! Due a simple calculation: this value is roughly equal to 0.1 mSv/h, in a day it means 2.4 mSv. In one year the value becomes 876 mSv! For good luck this is NOT a constant value, there are long periods of time in which there are no falling radiations.

Coming back to my question, I put it because I like to verify facts (if possible), not simple reading general statement. [smiley=thumbsup.gif]
 
Dark_Horse

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FrancoRob said:
The reading is 0.01 mR/h, and if this reading would be a constant value, it is NOT low! Due a simple calculation: this value is roughly equal to 0.1 mSv/h, in a day it means 2.4 mSv. In one year the value becomes 876 mSv! For good luck this is NOT a constant value, there are long periods of time in which there are no falling radiations.

Coming back to my question, I put it because I like to verify facts (if possible), not simple reading general statement. [smiley=thumbsup.gif]
Click to expand...
FrancoRob,

Would you be able to measure the actual radiation from a set of the marbles? I would donate a set of my uranium-marbles to you in order to get a good measurment on them.
DH
 
FrancoRob

FrancoRob

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Dark_Horse said:
[quote author=FrancoRob link=1225337223/40#43 date=1226004327]The reading is 0.01 mR/h, and if this reading would be a constant value, it is NOT low! Due a simple calculation: this value is roughly equal to 0.1 mSv/h, in a day it means 2.4 mSv. In one year the value becomes 876 mSv! For good luck this is NOT a constant value, there are long periods of time in which there are no falling radiations.

Coming back to my question, I put it because I like to verify facts (if possible), not simple reading general statement. [smiley=thumbsup.gif]
Click to expand...
FrancoRob,

Would you be able to measure the actual radiation from a set of the marbles? I would donate a set of my uranium-marbles to you in order to get a good measurment on them.
DH[/quote]

Well, the Geiger Counter I have is very sensitive, I have checked it near the Euratom, (European Atomic Research Center) that is no far from where I live, and the specialist found it fine. If these uranium-marbles emit radiations, I would be able to read them.
 
Hemlock_Mike

Hemlock_Mike

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Sometimes a marble can be cracked by heating it and dropping it into water.

Mike
 
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