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TheFrenchun
Officially Mrs saspro
Joined: Wed Jan 06, 2010 7:55 pm
Posts: 4955
Location: on the naughty step
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see info here for pre 70's lenses. No Nikon on there  Pre 70s radioactive lenses
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| Sun May 05, 2013 4:29 pm |
 
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timark_uk
Moderator
Joined: Thu Apr 23, 2009 6:11 pm
Posts: 12143
Location: Belfast
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| Mon May 06, 2013 12:02 pm |
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TheFrenchun
Officially Mrs saspro
Joined: Wed Jan 06, 2010 7:55 pm
Posts: 4955
Location: on the naughty step
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O cripes that's one I've got!
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| Thu May 09, 2013 1:36 pm |
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timark_uk
Moderator
Joined: Thu Apr 23, 2009 6:11 pm
Posts: 12143
Location: Belfast
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With the thorium glass element?
Mark
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| Thu May 09, 2013 2:10 pm |
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TheFrenchun
Officially Mrs saspro
Joined: Wed Jan 06, 2010 7:55 pm
Posts: 4955
Location: on the naughty step
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Not sure, mine is from ~1972 I think.
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| Thu May 09, 2013 2:39 pm |
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timark_uk
Moderator
Joined: Thu Apr 23, 2009 6:11 pm
Posts: 12143
Location: Belfast
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Then you'll need to get it checked before you go making decisions about it. (8+)
Mark
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| Thu May 09, 2013 2:46 pm |
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JJW009
I haven't seen my friends in so long
Joined: Thu Apr 23, 2009 6:58 pm
Posts: 8767
Location: behind the sofa
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The way Curie detected radiation was by holding radium very close to her eye in a dim room. When the alpha particles hit your retina, you see a little flash or "scintillation".
Then she died of cancer.
_________________jonbwfc's law: "In any forum thread someone will, no matter what the subject, mention Firefly." When you're feeling too silly for x404, youRwired.net
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| Thu May 09, 2013 4:44 pm |
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belchingmatt
I haven't seen my friends in so long
Joined: Fri May 15, 2009 3:16 am
Posts: 6146
Location: Middle Earth
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Alpha particles wouldn't penetrate past the cornea. They only really become a problem when ingested, such as that Russian bloke and the Polonium 210.
_________________
Dive like a fish, drink like a fish!
><(((º>`•.¸¸.•´¯`•.¸><(((º>
•.¸¸.•´¯`•.¸><(((º>`•.¸¸.•´¯`•.¸><(((º>
If one is diving so close to the limits that +/- 1% will make a difference then the error has already been made.
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| Thu May 09, 2013 7:48 pm |
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JJW009
I haven't seen my friends in so long
Joined: Thu Apr 23, 2009 6:58 pm
Posts: 8767
Location: behind the sofa
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Yeah I was thinking that as I typed it, but didn't want the facts to get in the way... _________________jonbwfc's law: "In any forum thread someone will, no matter what the subject, mention Firefly." When you're feeling too silly for x404, youRwired.net
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| Thu May 09, 2013 8:52 pm |
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ProfessorF
What's a life?
Joined: Thu Apr 23, 2009 7:56 pm
Posts: 12030
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In fairness, you're not wrong. Just a truncated version of her life. 
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| Thu May 09, 2013 9:10 pm |
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