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Home > Measurement

 Contents
1 Metrology
2 History
2.1 Systems of measurement
3 Difficulties in measurement
4 See also
5 External links
6 Miscellaneous
Measurement is the determination of the size or magnitude of something. Measurement is not limited to physical quantities, but can extend to quantifying almost anything imaginable. Examples of measurement range from, degrees of uncertainty, to the consumer confidence, to the rate of increase in the fall in the price of beanie babies. It is important to know, however, that different kinds of quantity should be measured with different levels of measurement.

In academic research , measurement is essential. It includes the proces of collecting data which can be used to make claims about learning. Measurement is also used to evaluate the effectiveness of a program or product (known as an evaluand).

In physics and engineering, measurement is the process of comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the measurement results in at least two numbers for the relationship between the item under study and the referenced unit of measurement, where at least one number estimates the statistical uncertainty in the measurement, also referred to as measurement error (in a philosophical distinction). Measuring instrumentIn physics and engineering, measurement is the activity of comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the measurement results in a given number for the relationship betwees are the means by which this translation is made.

For example, the unit for length might be a well-known person's foot, and the length of a boat can be given as the number of times that person's foot would fit the length of the boat.

A measurement is a comparison to a standard. -- William ShockleyWilliam Bradford Shockley ( February 13, 1910 August 12, 1989) was a physicist and co- inventor of the transistor with John Bardeen and Walter Houser Brattain, for which he was awarded the Nobel Prize in physics. Born in London, England, to American paren

1 Metrology

Metrology is the study of measurement. A metricSee: Metrics International System of Units, colloquially called the Metric System, and also metrication. Software metric. Metric space, treating a mathematical abstraction of the notion of distance''. Metric tensor. Normed vector space. Metric and metrica is a standard for measurement. The quantification of phenomena through the process of measurement relies on the existence of an explicit or implicit metric, which is the standard to which the measure is referenced. If I say I am 5, I am indicating a measurement without supplying an applicable standard. I may mean I am 5 years old or I am 5 feet high, however the implicit metric is that I mean I am 5 years old.

2 History

LawThis article is about law in society. For other possible meanings, see law (disambiguation). Law (a loanword from Danish-Norwegian lov , in politics and jurisprudence, is a set of rules of conduct which mandate or proscribe (or both) specified relationshis to regulate measurement were originally developed to prevent fraudFraud is the crime or offense of deliberately deceiving another in order to damage them usually, to obtain property or services from him unjustly. Fraud can be committed through many methods, including mail, wire, phone, and the Internet. Forms of crimina. However, units of measurement are now generally defined on a scientific basis, and are established by international treaties. In the United StatesThe United States of America also referred to as the United States U. America ¹ or the States is a federal republic in central North America, stretching from the Atlantic in the east to the Pacific Ocean in the west. It shares land borders with Canada in, commercial measurements are regulated by the National Institute of Standards and Technology NIST, a division of the United States Department of CommerceThe United States Department of Commerce is a Cabinet department of the United States government concerned with promoting economic growth. It was originally created as the United States Department of Commerce and Labor on February 14, 1903. It was subsequ.

The history of measurements is a topic within the History of Science and Technology. The metre (us: meter) was standardized as the unit for length after the French revolution, and has since been adopted throughout most of the world. The United States and the UK are in the process of converting to the SI system. This process is known as metrication.



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Topics: Measurement, Metrology, History, Systems Of Measurement...
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