Chemistry and physics to the rescue ─ maybe Apparently the world’s standard kilogram, a more than century old cylinder of platinum and iridium kept in Paris, is losing mass. That obviously presents a problem for standardization of measures. Nature reports that two modern alternatives seek to replace it. Both are based on physical constants, rather [...]
Categories: Science
Tagged: Avogadro's constant, chemistry, Elemental shift for kilo, Geoff Brumfiel, International Committee for Weights and Measures, iridium, kilogram, physical constants, physics, Planck's constant, platinum, standardization of measures