units and dimension_0815

units and dimension_0815 - High accuracy low precision AND...

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High precision low accuracy High accuracy low precision DIMENSIONS AND UNITS All measurements have three parts: , , and a number Dimension : designate a physical entity under consideration (e.g., time, distance, weight). Primary dimension: distance/length, time, , Expression: length [L], time [t], , Secondary dimensions: (combination of primary dimensions): force (=mass*acceleration): [M][L]/[t] 2 work or energy (=force*distance): power (=work/time): pressure (=force/area): [M]/[L][t] 2 Unit : designate the magnitude or size of the dimension under consideration (e.g., m for length, kg for weight). English system , which was used primarily in industry, and the metric system , which was used in the sciences. The chemical and food industries in the United States use the American Engineering System , BTU, hp, psi, lb m , lb f SI system : International System of Units (abbreviated SI from French : Système international d'unités ), proposed for use in both science and industry. Preferred
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units and dimension_0815 - High accuracy low precision AND...

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