Available from Physics arXiv, September 16, 2007.
Copyright © 2007 by Ronald F. Fox and Theodore P. Hill. The definitive version is available at http://arxiv.org/abs/0709.2576.
NOTE: At the time of publication, the author Theodore P. Hill was not yet affiliated with Cal Poly.
Fixing the value of Avogadro's constant, the number of atoms in 12 grams of carbon-12, at exactly 844468863 would imply that one gram is the mass of exactly 18x140744813 carbon-12 atoms. This new definition of the gram, and thereby also the kilogram, is precise, elegant and unchanging in time, unlike the current 118-year-old artifact kilogram in Paris and the proposed experimental definitions of the kilogram using man-made silicon spheres or the watt balance apparatus.