Promethium Promethium glow switch
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Promethium glow switch.
I'm still trying to figure out exactly which part of the compact fluorescent bulbs I have contain the actual promethium. This might be it.
Source: Unknown
Contributor: Theodore Gray
Acquired: 29 April, 2009
Text Updated: 30 April, 2009
Price: Unknown
Size: 1"
Purity: <0.01%