Roundest Object In the World Created
holy_calamity writes “An international research group has created the most perfect spheres ever made, in a bid to pin down a definition of the kilogram. It should be possible to count exactly the number of atoms in one of the roughly 9cm silicon spheres to define the unit. Currently the kilogram is defined only by a 120 year old lump of platinum in Paris, but its mass is changing relative to copies held elsewhere. Other SI units have more systematic definitions.”
Read more of this story at Slashdot.
Original post by CmdrTaco