| | |   Mechanical MagicCube. Mechanically (pyrotechnically) fired GE MagiCube flash cube.  Remarkably, these flash bulbs have no electrical contacts.  A thin tube filled with contact-sensitive explosive (I would guess mercury fulminate) leads into each bulb, and is set off with a sharp knock on the bottom.
 Source: eBay seller clinia
 Contributor: Theodore Gray
 Acquired: 2 April, 2009
 Text Updated: 7 April, 2009
 Price: $5
 Size: 1.25"
 Purity: <10%
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