The kg template had lost mass by the time this all happened: https://news.sky.com/story/scientists-redefine-kilogram-as-original-measure-loses-mass-11552690 htt

The kg template had lost mass by the time this all happened: https://news.sky.com/story/scientists-redefine-kilogram-as-original-measure-loses-mass-11552690 https://news.sky.com/story/scientists-redefine-kilogram-as-o...