Definition of Kilogram to Change

The unit of mass will no longer be defined by a lone physical object but instead in terms of a universal constant.

Definition of Kilogram to Change

The unit of mass will no longer be defined by a lone physical object but instead in terms of a universal constant.

kilogram

Bob Grant | Jul 5, 2012 | 2 min read

Scientists have crafted two new definitions for the common unit of mass. The fight to pick the best one is getting nasty.