Some articles on sphere, silicon:
... and delineate the kilogram as a softball-size (93.6 mm diameter) sphere of silicon atoms ... Silicon was chosen because a commercial infrastructure with mature processes for creating defect-free, ultra-pure monocrystalline silicon already exists to service the semiconductor industry ... To make a practical realization of the kilogram, a silicon boule (a rod-like, single-crystal ingot) would be produced ...
Famous quotes containing the word sphere:
“Men are rewarded for learning the practice of violence in virtually any sphere of activity by money, admiration, recognition, respect, and the genuflection of others honoring their sacred and proven masculinity. In male culture, police are heroic and so are outlaws; males who enforce standards are heroic and so are those who violate them.”
—Andrea Dworkin (b. 1946)