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Perfect silicon sphere to redefine the kilogram The Age, Australia - A CSIRO scientist examines a silicon sphere, similar to one that will be used to determine the exact atomic weight of a kilogram. ... |
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Perfect spheres to redefine the kilogram ABC Science Online, Australia - Scientists are hoping to redefine the kilogram by counting the number of atoms in the roundest objects ever made. So for the first time, a kilogram would ... |
