Swissmarble Posted November 26, 2013 Report Share Posted November 26, 2013 Got my UV-Stick last week. I LOVE it, felt like Darth Vader when I checked my marbles yesterday MAY THE FORCE BE WITH YOU !!! Ron Link to comment Share on other sites More sharing options...
JVVmarbles Posted November 26, 2013 Report Share Posted November 26, 2013 Great! Now you have the find a Vaseline glass marble (contains uranium). They glow like crazy under a blacklight. Link to comment Share on other sites More sharing options...
Steph Posted November 26, 2013 Report Share Posted November 26, 2013 LOL Darth Ron. I used to sort out the brightest ones first. Then after I enjoyed those and put them away and let my eyes get used to the next level, I'd sort out whichever colors seemed to be the brightest at that point. And then after that I'd sort again. Somewhere around the third or fourth level I started seeing really neat multi-color shows. Like some Marble Kings which glowed a lovely blue. And an Akro popeye which had four colors of glow. And many colors of Jabo of course. Link to comment Share on other sites More sharing options...
Swissmarble Posted November 26, 2013 Author Report Share Posted November 26, 2013 Does anyone of you know which marbles glow and which not ? It is rather strange.... - ALL of my sulphides glow - about 50% of my swirls glow - most of the lutz marbles glow except the ones with blue based glass - non of my end-of-day-marbles glow Does anybody know at what time they started to use non-uranium-glass ? All my marbles are old German handmades, but perhaps the non-glowing-ones were made after WW1 and the others before ? Would be really interesting to know... I am not a Jedi yet.... Link to comment Share on other sites More sharing options...
Steph Posted November 26, 2013 Report Share Posted November 26, 2013 A lot of dates in this Wikipedia article: Uranium glass Link to comment Share on other sites More sharing options...
hdesousa Posted November 26, 2013 Report Share Posted November 26, 2013 Ron, From a previous topic: "Light green flourescence seen in soda glass under ultraviolet light has nothing to do with uranium, radioactivity nor age, although radioactive glass is highly fluorescent and old glass usually does contain manganese, which I think is primarily responsible for the greenish glow.(I don't understand fluorescence in glass - google it, if you want to risk getting really confused.)" http://marbleconnection.com/topic/17673-transitionals-marbles-or-handmade-single-gather-marbles/ Link to comment Share on other sites More sharing options...
lstmmrbls Posted November 27, 2013 Report Share Posted November 27, 2013 Manganese usually produces an orange glow in glass when used in abundance. Link to comment Share on other sites More sharing options...
hdesousa Posted November 27, 2013 Report Share Posted November 27, 2013 from: http://libanswers.cmog.org/a.php?qid=169200 Why would clear glass show a greenish glow under black light? Under black light, several of our clear sandwich glass pieces exhibit an iridescent green glow. Is this an indication that the piece is older than the pieces that do not show this trait? I have been told that older flint glass has chromium in it that may cause this effect, is this true ? Last Updated: May 01, 2012 | 99 Views Topics: Science Answer According to our research scientist, Dr. Robert Brill, "a weak-moderate yellowish-green fluorescence (under either short-wave or long-wave UV) usually indicates the presence of additive manganese as a decolorizer. It is a common response by non-lead glasses of all types of many periods. I do not recall ever seeing a green fluorescence response to any lead glasses. The fluorescence of any other elements would normally be masked by the strong ice-blue fluorescence of the lead. Link to comment Share on other sites More sharing options...
jeroen Posted November 27, 2013 Report Share Posted November 27, 2013 What kind of UV light is needed? Long wave or short wave? I found on internet an article saying that black light is long wave UV light Link to comment Share on other sites More sharing options...
Swissmarble Posted November 27, 2013 Author Report Share Posted November 27, 2013 What kind of UV light is needed? Long wave or short wave? I found on internet an article saying that black light is long wave UV light Hi Jeroen I ordered this one here on Amazon: http://www.amazon.de/gp/product/B000T9HGQI/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1 This works perfectly and somehow you feel like a Jedi when you use it ;-) Ron Link to comment Share on other sites More sharing options...
jeroen Posted November 27, 2013 Report Share Posted November 27, 2013 Hi Ron, Thanks for you information. I have a small one that is used for stamp collectors. It has long wave. I looks like with my lamp I don't get the effect that you have. Perhaps I need a short wave black light. Jeroen Link to comment Share on other sites More sharing options...
Swissmarble Posted January 26, 2014 Author Report Share Posted January 26, 2014 Hi folks I am still running around with my UV-stick and checking my marbles. And now something really interesting. Obviously it is a myth that just old marbles (and especially produced marbles from nowadays) are glowing. Look at this bunch of ordinary marbles. I won most of these as a kid about 35 years ago, so they are at least that old: Most of these are glowing like hell....... Link to comment Share on other sites More sharing options...
Swissmarble Posted January 26, 2014 Author Report Share Posted January 26, 2014 ......while this bunch of old antique marbles doesn't glow at all.... Strange, isn't it ? So the conclusion is, that SOME old AND newer marbles are glowing and some not. How about the old American machine made marbles (CAC, Peltier etc.). Do these marbles glow under UV-light ? PLMK Ron Link to comment Share on other sites More sharing options...
Steph Posted January 26, 2014 Report Share Posted January 26, 2014 Same story. Some do, some don't. UV marbles were made in this century too. Link to comment Share on other sites More sharing options...
Steph Posted January 26, 2014 Report Share Posted January 26, 2014 One time I hit a large (more than an inch if I recall), soiled, undecorated china with UV. And guess what ... I found that it once had flowers on it. Nothing was visible to the naked eye but the old design lightly glowed in the darkness. Link to comment Share on other sites More sharing options...
Swissmarble Posted January 26, 2014 Author Report Share Posted January 26, 2014 One time I hit a large (more than an inch if I recall), soiled, undecorated china with UV. And guess what ... I found that it once had flowers on it. Nothing was visible to the naked eye but the old design lightly glowed in the darkness. Wow, that's a cool surprise, isn't it ? Link to comment Share on other sites More sharing options...
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