- published: 28 May 2015
- views: 56518
Measurement is the process or the result of determining the ratio of a physical quantity, such as a length, time, temperature etc., to a unit of measurement, such as the meter, second or degree Celsius. The science of measurement is called metrology.
The English word measurement originates from the Latin mēnsūra and the verb metiri through the Middle French mesure.
With the exception of a few seemingly fundamental quantum constants, units of measurement are essentially arbitrary; in other words, people make them up and then agree to use them. Nothing inherent in nature dictates that an inch has to be a certain length, or that a mile is a better measure of distance than a kilometre. Over the course of human history, however, first for convenience and then for necessity, standards of measurement evolved so that communities would have certain common benchmarks. Laws regulating measurement were originally developed to prevent fraud in commerce.
Today, units of measurement are generally defined on a scientific basis, overseen by governmental or supra-governmental agencies, and established in international treaties, pre-eminent of which is the General Conference on Weights and Measures (CGPM), established in 1875 by the Treaty of the metre and which oversees the International System of Units (SI) and which has custody of the International Prototype Kilogram. The metre, for example, was redefined in 1983 by the CGPM as the distance traveled by light in free space in 1⁄299,792,458 of a second while in 1960 the international yard was defined by the governments of the United States, United Kingdom, Australia and South Africa as being exactly 0.9144 metres.
Math for Kids: Measurement, "How Do You Measure Up" - Fun & Learning Game for Children
Measurement - Closure (Lyric Video)
Math Monsters Standard and Nonstandard Measurement
Basic Math: Lesson 7 - Units of Measurement
Nonstandard Measurement - Sid The Science Kid - The Jim Henson Company
The Measurements Song
INCHES FEET and YARDS Song: Measurement Song For Kids
Sesame Street: Measure, Yeah, Measure
XI-2.01. Units and Measurement part-1(2014), Pradeep Kshetrapal Physics
How to Solve Measurement Problems : Math Solutions
How to Read an Inch Ruler or Tape Measure
Lesson 1 - How to Take the Body Measurements for Ladies' Dresses
Metric System Song For Kids: Metric System Rap Video | Measurement |
Capacity Song For Kids: Measurement Video For Elementary Students