Metrication is the process of introducing the International System of Units (abbreviated SI for Système international d'unités), the metric system of measurement, to replace the traditional or customary units of measurement of a country or region. Although all U.S. customary units have been redefined in terms of SI units, the United States does not commonly mandate the use of SI, making it, according to the CIA Factbook, one of three countries that has not adopted the International System of Units (SI) metric system as their official system of weights and measures, along with Burma (Myanmar) and Liberia.
The Metric Marvels is a series of seven animated educational shorts featuring songs about meters, liters, Celsius, and grams, designed to teach American children how to use the metric system. They were produced by Newall & Yohe, the same advertising agency which produced ABC's popular Schoolhouse Rock! series, and first aired on the NBC television network in September 1978. Voices for the Metric Marvels shorts included Lynn Ahrens, Bob Dorough, Bob Kaliban, and Paul Winchell.
The partial specific volume express the variation of the extensive volume of a mixture in respect to composition. It is the partial derivative of volume with respect to the mass of the component of interest.
where is the partial specific volume of a component defined as: