![]() ![]() The meter is a unit of length equal to 3.28 feet the gram is a unit of mass equal to approximately 0.0022 pounds (about the mass of a paper clip) and the liter is a unit of volume equal to 1.05 quarts. The three most common base units in the metric system are the meter, gram, and liter. The simplicity of the metric system stems from the fact that there is only one unit of measurement (or base unit) for each type of quantity measured (length, mass, etc.). The metric system is almost always used in scientific measurement. In 1960, the metric system was officially named the Système International d'Unités (or SI for short) and is now used in nearly every country in the world except the United States. In 1790, the French National Assembly commissioned the Academy of Science to design a simple decimal-based system of units the system they devised is known as the metric system. At the end of the century, the French government sought to alleviate this problem by devising a system of measurement that could be used throughout the world. The lack of common standards led to a lot of confusion and significant inefficiencies in trade between countries. Length, for example, could be measured in feet, inches, miles, spans, cubits, hands, furlongs, palms, rods, chains, leagues, and more. Understanding Scientific Journals and Articlesīy the 18 th century, dozens of different units of measurement were commonly used throughout the world.Using Graphs and Visual Data in Science.Scientists and the Scientific Community.Scientific Notation and Order of Magnitude.The Case of the Ivory-billed Woodpecker.Santiago Ramón y Cajal and Camillo Golgi.Factors that Control Earth's Temperature.Plates, Plate Boundaries, and Driving Forces.Solutions, Solubility, and Colligative Properties.Y-Chromsome and Mitochondrial DNA Haplotypes.Absorption, Distribution, and Storage of Chemicals.
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