13 Facts About Metric system

Metric system is a system of measurement that succeeded the decimalised system based on the metre that had been introduced in France in the 1790s.

Charles Maurice de Talleyrand championed a new Metric system based on natural units, proposing to the French National Assembly in 1790 that such a Metric system be developed.

Talleyrand had ambitions that a new natural and standardised Metric system would be embraced worldwide, and was keen to involve other countries in its development.

Metric system was designed to have properties that make it easy to use and widely applicable, including units based on the natural world, decimal ratios, prefixes for multiples and sub-multiples, and a structure of base and derived units.

Metric system is extensible, and new derived units are defined as needed in fields such as radiology and chemistry.

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Many derived units were already in use before and during the time the metric system evolved, because they represented convenient abstractions of whatever base units were defined for the system, especially in the sciences.

However, 1935 extensions to the prefix Metric system did not follow this convention: the prefixes nano- and micro-, for example have Greek roots.

Each variant of the metric system has a degree of coherence—the derived units are directly related to the base units without the need for intermediate conversion factors.

CGS Metric system had two units of energy, the erg that was related to mechanics and the calorie that was related to thermal energy; so only one of them could bear a coherent relationship to the base units.

In 1874, this Metric system was formally promoted by the British Association for the Advancement of Science .

The Metric system's characteristics are that density is expressed in, force expressed in dynes and mechanical energy in ergs.

The MKS Metric system came into existence in 1889, when artefacts for the metre and kilogram were fabricated according to the Metre Convention.

When it became apparent that the unit would be the ampere, the Metric system was referred to as the MKSA Metric system, and was the direct predecessor of the SI.