Fundamental Physical Constants
- Values of Fundamental Physical
Constants
- Peter J. Mohr and Barry N. Taylor
- This database gives values of the basic constants and conversion factors of
physics and chemistry resulting from the 2002 least-squares adjustment of the
fundamental physical constants as published by the CODATA Task Group on
Fundamental Constants and recommended for international use by CODATA.
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- Searchable Bibliography of
Fundamental Constants
- Peter J. Mohr and Barry N. Taylor
- This searchable database gives the citations for the most important
theoretical and experimental publications relevant to the fundamental
physical constants and closely related precision measurements
published since the mid 1980s. Earlier papers of particular interest
are also included. The database is updated on a daily basis through the
addition of papers from the current literature and made more comprehensive
through the addition of earlier papers.
- International System of Units (SI)
- Barry N. Taylor
- This is a description of the SI, the modern metric system of measurement. Long
the language universally used in science, the SI has become the dominant language
of international commerce and trade. Included are: 1) descriptions of base and
derived SI units; 2) conversion factors from non-SI to SI units; and 3) rules and
style conventions for spelling, printing, and using units of the SI (with SI
prefixes), and for expressing values of quantities, including the results of
measurements.
- Guidelines for Evaluating and Expressing
Measurement Uncertainty
- Barry N. Taylor and Chris E. Kuyatt
- This publication gives the NIST policy on expressing measurement uncertainty.
Further, it succinctly summarizes the International Organization for
Standardization (ISO) 100-page Guide to the Expression of Uncertainty in
Measurement on which the NIST policy is based. Appendix D clarifies and gives
additional guidance on a number of topics related to measurement uncertainty,
including the use of certain terms such as accuracy and precision.
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