My funny jab about Le Gran K goes back to the similar reason why Imperial measurements were dumb: the damned measurement (weight) changes. Le Gran K is a weigh

My funny jab about Le Gran K goes back to the similar reason why Imperial measurements were dumb: the damned measurement (weight) changes. Le Gran K is a weight stored in France that every kilogram weight is measured against. This weight, made of iridium and platinum is measured every 40 years. Every weigh in has been different. Every other metric measurement is keyed in upon a hard constant of nature. A meter is some fraction of C. A second is the number of vibrations in a rarefied caesium gas. The kilogram is a weight that's compared to a bunch of others?! I do remember some chemists working back in '08 about the calculation of a precise kilogram by definition of the exact number of atoms of carbon-12 in a cube. They worked out the math, and determined an exact number of atoms.* * http://gtresearchnews.gatech.edu/newsrelease/kilogram.htm http://gtresearchnews.gatech.edu/newsrelease/kilogram.htm