Metric System
The metric system is an alternative system of measurement used in most countries, as well as in the United States. The metric system is based on joining one of a series of prefixes, including kilo-, hecto-, deka-, deci-, centi-, and milli-, with a base unit of measurement, such as meter, liter, or gram.
The metric system of measurement started after the French Revolution in 1670. The system comprises of three base units, namely meter, gram and liter. The older metric system, called the CGS system, is based on centimeters , grams and seconds.
How does the metric system differ from SI?
The metric system is different from SI or International System of Units in that it has only three base units, whereas the SI has seven base units. Also, the SI is a modern system of measurement that is based on the older metric system.
The SI base units and their physical quantities are the meter for measurement of length, the kilogram for mass, the second for time, the ampere for electric current, the Kelvin for temperature, the candela for luminous intensity, and the mole for amount of substance.
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