One step closer to a new kilogram
Tuesday, February 21, 2012 - 15:30
in Physics & Chemistry
New research takes a significant step towards changing the international definition of the kilogram – which is currently based on a lump of platinum-iridium kept in Paris. Scientists have now produced technology capable of accurate measurements of Planck's constant, the final piece of the puzzle in moving from a physical object to a kilogram based on fundamental constants of nature.