10 years ago
Silicon: After the chip, another revolution?
The original silicon revolution was of course, glass. Man first began to explore its properties a million and a half years ago - that's when our ancient ancestors discovered that obsidian, the almost jet black glass which is sometimes formed when lava cools rapidly, was useful. Obsidian breaks leaving a very keen edge, so was good for weapons and tools including, in some ancient cultures, knives used for ritual circumcisions.
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