Measurement, uncertainty and lasers /

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"Version: 20190401"--Title page verso.Includes bibliographical references.1. All measurements have uncertainties -- 1.1. Introduction -- 1.2. Measurement uncertainty in sports -- 1.3. Are uncertainties always acceptable? -- 1.4. Chaos2. What is measurement uncertainty? -- 2.1. Introduction -- 2.2. Statistical and systematic uncertainties -- 2.3. Accuracy and stability3. Units of physical values and their definitions until 1960 -- 3.1. Introduction -- 3.2. Unification of units of physical values -- 3.3. The standard of time and frequency (until Cs atomic clock) -- 3.4. Length standard (until wavelength of light emitted from Kr) -- 3.5. Mass standard -- 3.6. Temperature standard -- 3.7. Electric current standard -- 3.8. Luminous intensity standard -- 3.9. Substance quantity standard4. Lasers revolutionized physics -- 4.1. Introduction -- 4.2. Fundamentals of lasers -- 4.3. Laser spectroscopy -- 4.4. Measurement of laser frequency -- 4.5. Laser cooling5. Revolution of measurement uncertainties due to the introduction of lasers -- 5.1. Introduction -- 5.2. Measurement of time and frequency using lasers -- 5.3. Length standard given by the constant value of the speed of light -- 5.4. Mass standard on a micro scale -- 5.5. Determination of the Avogadro constant -- 5.6. Definition of elementary charge and new definition of electric current -- 5.7. Temperature measurement with defined Boltzmann constant -- 5.8. Measurement uncertainty of luminal intensity -- 5.9. The role of lasers in the redefinition of physical values6. Measurement uncertainties and physics -- 6.1. Introduction -- 6.2. History of physics and clocks -- 6.3. Confirmation of relativistic effects -- 6.4. Symmetry between particles and antiparticles -- 6.5. Observation of the vacuum energy (quantum electrodynamics) -- 6.6. Proton size puzzle -- 6.7. Symmetry violation of chiral molecules -- 6.8. Search for variations in fundamental constants -- 6.9. Precise measurement in astronomical research -- 6.10. Decay of protons -- 6.11. Precise measurement of time and frequency for physics -- 7. Conclusion.The measurement of values is fundamental in science and technology. Not only does this book include the importance of uncertainty, accuracy and precision of measurement, it also explains how laser technology has helped improve measurement and redefine standards. Masatoshi introduces the concept of the measurement uncertainty in both a qualitative and quantitate manner, whilst including key equations and formulae. It discusses the SI units, standards and the importance of using lasers for measurement in modern metrology, including the redefinition of SI units over time; which culminated in the agreement to redefine the Kilogram, which takes effect in May 2019. Real case studies are included, from the implications for measuring times at the Olympics, to the impacts in criminal investigations.Advanced students.Also available in print.Mode of access: World Wide Web.System requirements: Adobe Acrobat Reader, EPUB reader, or Kindle reader.Masatoshi Kajita graduated from the Department of Applied Physics at the University of Tokyo in 1981 and obtained his PhD from the Department of Physics at the University of Tokyo in 1986. After working at the Institute for Molecular Science, he joined the National Institute of Information and Communications Technology (NICT), formally Communications Research Laboratory (CRL), in 1989. In 2009 he was guest professor at the Universit?e de Provence in Marseille, France.Title from PDF title page (viewed on May 6, 2019).

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Call Number

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Publisher

: .,

Collation

1 online resource (various pagings) :illustrations (some color).

Language

English

ISBN/ISSN

9780750323284

Classification

681/.2

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Edition

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Subject(s)

Scientific standards.
TECHNOLOGY & ENGINEERING / Measurement.
Lasers.
Measurement.
Measurement uncertainty (Statistics)

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Statement of Responsibility

Masatoshi Kajita.

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