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Author Topic: 365nm and 395nm UV Light  (Read 1639 times)

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Offline NevB

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365nm and 395nm UV Light
« on: August 28, 2024, 11:48:03 AM »
I've just got a 365nm. UV torch as I thought it might be interesting to test it against a 395nm. one. The first picture is a beer glass under 395nm. which just shows a pale green manganese glow through the base, the second one is the same glass under 365nm. and the whole glass lights up a quite bright green. The third and fourth pictures are a uranium glass piece shown under 395nm. and 365nm. and as you can see there is little if no difference.
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Offline Lustrousstone

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Re: 365nm and 395nm UV Light
« Reply #1 on: August 28, 2024, 12:15:15 PM »
Now you can why Etsy has shops selling colourless "uranium" glass...
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Offline NevB

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Re: 365nm and 395nm UV Light
« Reply #2 on: August 28, 2024, 01:25:18 PM »
Yes Christine, and there's now a trend of selling "manganese glass" as if it were special. I was selling a non-uranium green dish on Ebay and someone messaged me to say I should check it under UV to see if it contained manganese which would make it more valuable.
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Offline Lustrousstone

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Re: 365nm and 395nm UV Light
« Reply #3 on: August 29, 2024, 08:38:04 AM »
I know. I don't get it at all!
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