Last Updated: Thursday, October 24, 2013, 18:32
Researchers have developed a novel system to allow a direct comparison of an object being weighed in a vacuum to one outside a vacuum.
Last Updated: Thursday, October 24, 2013, 14:17
Last Updated: Sunday, August 25, 2013, 17:44
Scientists behind the Avogadro Project in Australia have sought to create the world`s roundest object.
Last Updated: Monday, January 07, 2013, 18:05
The official kilogramme - a cylinder-shaped hunk of metal - that defines the fundamental unit of mass, has itself gained weight, scientists say.
more videos >>