منابع مشابه
Redefinition of the kilogram, ampere, kelvin and mole: a proposed approach to implementing CIPM recommendation 1 (CI-2005)
The International System of Units (SI) is founded on seven base units, the metre, kilogram, second, ampere, kelvin, mole and candela corresponding to the seven base quantities of length, mass, time, electric current, thermodynamic temperature, amount of substance and luminous intensity. At its 94th meeting in October 2005, the International Committee for Weights and Measures (CIPM) adopted a re...
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This paper describes some of the major contributions to metrology and physics made by the NIST Electricity Division, which has existed since 1901. It was one of the six original divisions of the National Bureau of Standards. The Electricity Division provides dc and low-frequency calibrations for industrial, scientific, and research organizations, and conducts research on topics related to elect...
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A recent paper (Robson and Sethian 1992, hereafter termed R&S) reports new experimental results on the old problem of Ampere tension. The null results they achieved led them to conclude the nonexistence of Ampere longitudinal forces, interpreted as forces differing observably from those predicted by the Lorentz force law. Their bibliography confirms that the subject is controversial. As with an...
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ژورنال
عنوان ژورنال: Nature
سال: 2014
ISSN: 0028-0836,1476-4687
DOI: 10.1038/505273a