MEASUREMENT SYSTEMS & CONVERSIONS

The United States and the Metric System: has conversion charts, questions and answers, the Metric Conversion Act, and an Historical summary of the metric system in the U.S.

Common Weights and Measures: is a great guide for metric prefixes, common U.S. and Metric equivalents, and mathematical notation for orders of magnitude, from Berkeley.

Understanding Our Planet Through Chemistry has a Section IV on Measuring Quality. It briefly introduces ideas about The Importance of Measurements, The Uncertainty of Measurements, and Searching for the Best Accuracy and Precision.

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