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International Bureau of Weights and Measures

The Measure of All Mass

Mario Livio | Posted 06.29.2015 | Science
Mario Livio

The kilogram is the last unit that is currently being determined by a physical object as a standard. The change in 2018 will not mean much to most of us, but redefining the kilogram in terms of physical constants means that it is not likely to change again anytime soon.

Kilogram Has Put On Weight, Scientists Say

Posted 01.07.2013 | Science

By: Tia Ghose Published: 01/06/2013 07:55 PM EST on LiveScience The kilogram may need to go on a diet. The international standard, a cylinder-shap...