In Reply to: Last posted by An observer on November 12, 2011 at 17:14:25:
He is using quartz, which is silicon dioxide. Pure silicon is the base material for semiconductors, and it is not transparent as quartz is. Oxide layers are applied in a controlled manner to exact specifications of composition, thickness and uniformity.
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Follow Ups
- you obviously have no scientific background, either - BS64 19:16:05 11/12/11 (1)
- That's because he's hawking gemstones - An observer 04:26:12 11/13/11 (0)