Promethium glow switch. | |||
Sample Image | |||
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% | |||
|