Measurement

Pronunciation: /ˈmɛʒ ər mənt/ ?

Measurement is assigning a number to a location based upon a unit measure[1]. For example, if one is using the metric system of distance, the unit measure is 1 meter. A measure of 2 meters is twice as long as a measure of 1 meter. A measure of 0.5 meters is half as long as a measure of 1 meter.

Common measurements include distance, time, mass, energy, force and angle.

A metric space is a geometric space with a method of measurement assigned to the space.

Measurement error is an important consideration. When measuring with any device, one is approximating the measure. For example, if the length of a piece of paper is measured with a metric ruler, typically the measurement is accurate to only 1 millimeter. Since the measurement is not mathematically exact, it introduces an error.

References

  1. measurement. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=measurement&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.

More Information

  • McAdams, David. Unit of Measure. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 2009-03-12. http://www.allmathwords.org/article.aspx?lang=en&id=Unit%20of%20Measure.

Educator Resources

  • Parallax (measurement error). NASA Connect. NASA LaRC Office of Education. 2010-02-18. http://www.archive.org/details/NasaConnect-Vt-Parallax.
  • Crash - Graphs and NASA Langley. NASA Connect. NASA LaRC Office of Education. 2010-02-18. http://www.archive.org/details/NasaConnect-Crash-GraphsAndNasaLangley.
  • Estimate and Measure. NASA Connect. NASA LaRC Office of Education. 2010-02-18. http://www.archive.org/details/NasaConnect-Bhfste-EstimateAndMeasure.
  • Proportionality - Modeling the Future. NASA Connect. NASA LaRC Office of Education. 2010-02-18. http://www.archive.org/details/NasaConnect-Proportionality-ModelingTheFuture.
  • Serving Size Activity. NASA Connect. NASA LaRC Office of Education. 2010-02-18. http://www.archive.org/details/NasaConnect-Bhfste-ServingSizeActivity.

Cite this article as:


Measurement. 2009-12-18. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/m/measurement.html.

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Revision History


2009-12-18: Added "References" (McAdams, David.)
2008-09-17: Initial version (McAdams, David.)

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