Thread: New Kindle said to be due end September
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Old 11-11-2015, 03:10 AM   #438
pdurrant
The Grand Mouse 高貴的老鼠
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Quote:
Originally Posted by HarryT View Post
"Transparent aluminum"?
Al[2]O[3], pure crystals are transparent. (Natural sapphires are the same formula, but with some impurities to give the colour.)
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