Balancing act The two systems of measurement – imperial and metric – are often used together in UK shops. (Courtesy: iStock/Paolo Paradiso) When I was at primary school in the 1960s, measurements were ...

Metric units are universally followed in most countries. The metric system was first introduced in France in 1799 and since then has been further refined and has become an international decimalised ...

Before measuring something, it is important to know which unit to use. Estimating its approximate size by comparing it with a more familiar object can help. In order to find a suitable unit of measure ...

Meters, kilograms, degrees Celsius. To most Americans, these units of measurement are little more than funny inconveniences on trips abroad. To scientists, they’re the very standards that allow for ...

The French government adopted this new metric system on April 7, 1795. A conference including scientists from France, the Netherlands, Switzerland, Denmark, Spain, and Italy worked from 1798 to 1799 ...

Sign up to our free Brexit newsletter for our analysis of the continuing impact of Brexit on the UK Sign up to our free newsletter for the latest analysis on Brexit's ...