Using extra-fine sandpaper (320 grit, to be exact), Corning scientist Kevin Reiman lightly rubbed the surface of a small, thin square of transparent sapphire crystal.
From CNET
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Using extra-fine sandpaper (320 grit, to be exact), Corning scientist Kevin Reiman lightly rubbed the surface of a small, thin square of transparent sapphire crystal.
From CNET
View Full Article
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