Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Heat sink. This is a lovely aluminum heat sink from a fiber optic signal amplifier you will find listed under erbium. Source: Theodore Gray Contributor: Theodore Gray Acquired: 28 February, 2009 Text Updated: 1 March, 2009 Price: Donated Size: 6" Purity: 99%