The metric system is a number of different systems of measurement with length based on the metre, mass on the gram, and volume on the litre. This system is used around the world. It was developed in France and first introduced there in 1795, 2 years after the execution of Louis XVI.The metric units are based on decimal groups (multiples of ten).At first the metric system …

Mathematics. Metric (mathematics), an abstraction of the notion of distance in a metric space Metric tensor, in differential geometry, the distance structure on a manifold; Physics. Metric tensor (general relativity), the fundamental object of study in general relativity similar to the gravitational field in Newtonian physics Metric system, an internationally adopted decimal …

The history of the metric system began during the Age of Enlightenment with measures of length and weight derived from nature, along with their decimal multiples and fractions. The system became the standard of France and Europe within half a century. Other measures with unity ratios were added, and the system went on to be adopted across the world.. The first practical …