About 7 minutes into this video: http://www.youtube.com/watch?v=_zWJNyoFgJM <http://www.youtube.com/watch?v=_zWJNyoFgJM&feature=plcp> &feature=plcp
Four electrodes as two sets of opposing electrodes, and each opposing set of two look more or less identical. One set looks to have larger ends, and to even have two nodes on the end. 1. The smaller set of electrodes have aluminum containers, or 'buckets' as Rohner calls them, that form the base of two of the opposing electrodes. 2. One bucket has Thorium and Rubidium inside. 3. The other bucket contains Thorium and Red Phosphorus. 4. Two tungsten electrodes; these are the larger, more rounded ones which look to have two nodes on the end; the opposing electrode's face cannot be seen. -Mark
