If scientists had sacred objects, this would be one of them: a single, closely guarded 137-year-old cylinder of metal, housed in a vault outside of Paris. It is a prototype that precisely defines a ...

A group of researchers from the University of Helsinki have carried out the first globally comprehensive analysis of the use and distribution of body-based units of measure. By analysing digital ...

Designers of the 17th century Taj Mahal, the finest piece of Mughal architecture, employed the same unit of measurement used by the Harappan civilization as far back 2000 BC, according to a study by ...

Length, time and volume are all examples of quantities close quantityA property that can exist as a magnitude, usually with a numerical value. For example, speed (quantity) is measured in metres per ...