Praseodymium Inefficient daylight bulb
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Inefficient daylight bulb.
Horribly inefficient blue-filtered incandescent bulb
Source: Hardware Store
Contributor: Theodore Gray
Acquired: 25 April, 2009
Text Updated: 25 April, 2009
Price: $1
Size: 5"
Purity: <1%
Praseodymium