metrology wikipedia - EAS
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檢視所有 Wikipediahttps://en.wikipedia.org/wiki/MetrologyMetrology is the scientific study of measurement. It establishes a common understanding of units, crucial in linking human activities. Modern metrology has its roots in the French Revolution's political motivation to standardise units in France when a length standard taken from a natural source was … 查看更多內容
The ability to measure alone is insufficient; standardisation is crucial for measurements to be meaningful. The first record of a permanent standard was in 2900 BC, when the royal Egyptian cubit was carved from … 查看更多內容
Metrology is defined by the International Bureau of Weights and Measures (BIPM) as "the science of measurement, embracing both … 查看更多內容
Several international organizations maintain and standardise metrology.
Metre Convention
The Metre Convention created three main international organizations 查看更多內容
Definition of units
The International System of Units (SI) defines seven base units: length, mass, time, electric current, thermodynamic temperature 查看更多內容A national measurement system (NMS) is a network of laboratories, calibration facilities and accreditation bodies which implement and maintain a country's measurement … 查看更多內容
CC-BY-SA 授權下的維基百科文字- https://en.wikipedia.org/wiki/Meteorology
Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did not begin until the 18th century. The 19th century saw modest progress in the field after weather observation networks were formed across broad regions…
Wikipedia · CC-BY-SA 授權下的文字- Dust devils: 1-10
- Molecular mean free path: 10 −7
- Minute turbulent eddies: 10 −2-10 −1
- Small eddies: 10 −1-1
Metrology - Wikiversity
https://en.wikiversity.org/wiki/Metrology2021年1月23日 · Though metrology is the science of measurement, in practical applications, it is the enforcement and validation of predefined standards for precision, accuracy, traceability, …
- https://en.wikipedia.org/wiki/Surface_metrology
- The most common method is to use a diamond stylus profilometer. The stylus is run perpendicular to the lay of the surface. The probe usually traces along a straight line on a flat surface or in a circular arc around a cylindrical surface. The length of the path that it traces is called the measurement length. The wavelength of the lowest frequency ...
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- https://en.wikipedia.org/wiki/Quantum_metrology
- A basic task of quantum metrology is estimating the parameter θ {\displaystyle \theta } of the unitary dynamics ϱ ( θ ) = exp ( − i H θ ) ϱ 0 exp ( + i H θ ) , {\displaystyle \varrho (\theta )=\exp(-iH\theta )\varrho _{0}\exp(+iH\theta ),} where ϱ 0 {\displaystyle \varrho _{0}} is the initial state of the system and H {\displaystyle H} is the H...
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- https://en.wikipedia.org/wiki/Dimensional_metrology
Dimensional metrology is the science of using physical measurement equipment to quantify the physical size, form, characteristics, and relational distance from any given feature. Contents 1 …
Virtual metrology - Wikipedia
https://en.wikipedia.org/wiki/Virtual_metrologyIn semiconductor manufacturing, virtual metrology refers to methods to predict the properties of a wafer based on machine parameters and sensor data in the production equipment, without …
Métrologie — Wikipédia
https://fr.wikipedia.org/wiki/Métrologiela métrologie opérationnelle, qui intervient directement dans les processus de production, sous la responsabilité conjointe des méthodes, des opérationnels et de la fonction qualité ; la « …
Metrología - Wikipedia, la enciclopedia libre
https://es.wikipedia.org/wiki/MetrologíaLa metrología (del griego μέτρον [ metron ], ‘medida’, y el sufijo -logía, ‘tratado’, ‘estudio’, ‘ciencia’, y este del sufijo griego -λογία [ loguía ]) 1 2 es la ciencia de las mediciones y sus aplicaciones …
- https://de.wikipedia.org/wiki/Metrologie
Die Metrologie (von altgriechisch μετρεῖν metreín „ messen “ und -logie) ist die Wissenschaft des Messens. Die dritte Ausgabe des International Vocabulary of Metrology von 2007 definiert die …
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