Results 11 to 20 of about 468,497 (281)
On the five base quantities of nature and SI (The International System of Units) [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2011 It is shown here that five base quantities (and the corresponding five base units) of nature are sufficient to define all derived quantities (and their units) and to describe all natural phenomena.
Kaptay G.
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Metrology of the XXI century. Radio engineering quantities and standards in the SI system of units [PDF]
Известия Саратовского университета. Новая серия: Физика, 2022 Background and Objectives: The article discusses the methodological recommendations for teachers and experimental researchers on metrological support of measurements and the correct use of units of physical quantities when reading courses in the ...
Khokhlov, Arthur V.
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Traceability of optical frequency to SI second via UTC(NIM)
Frontiers in Physics, 2022 Absolute frequency measurement of an optical clock is a milestone towards the redefinition of second in the International System of Units. This work summarizes briefly the measurement of frequency ratio between an optical clock and the second, applying ...
Yuzhuo Wang +3 more
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The international system of units (SI)
Comptes Rendus. Physique, 2004 The SI (Système international d'unités), adopted by the Conférence générale des poids et mesures in 1960, was the outcome of almost one century of progress in the establishment of a consistent system of measurement units. We present its main features with its base and derived units, which constitutes a coherent set of units related by rule of ...
Kovalevsky, J., Quinn, T.J.
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No Rationale for a Redefinition of the Mole
CHIMIA, 2009 In the wake of the redefinition of the kilogram, the last unit of the International System of Units (SI) that is still based on a man-made artefact, discussions were launched on the necessity of redefining other units, amongst other the unit ...
Hanspeter Andres +4 more
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International development of the SI in FAIR digital data
Measurement: Sensors, 2021 The International Committee for Weights and Measures has recognised the need to provide support for digital representations of the International System of Units (SI) and related metrological concepts, such as traceability and measurement uncertainty.
S.J. Chalk +9 more
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The greatest recognition to the scientist Nikola Tesla: Award of the unit for magnetic induction (T) in the international system of units (SI) [PDF]
Serbian Journal of Electrical Engineering, 2006 The paper describes the reasons and results that led to the greatest recognition that a scientist can achieve, his name Tesla given to a unit in the field of electricity and magnetism in the International System of Units (SI). The difficulties on the way
Spaić Gordana, Spiridonović Srđan
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Approaches to establishing voltage control requirements for distributed generation units [PDF]
E3S Web of Conferences, 2019 Analysis of Russian national regulation and technical standards requirements for generating equipment participation in voltage and reactive power control in the power system carried out.
Ilyushin Pavel +2 more
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Systemic Reconfiguration of Capitalism: Applying Ruggie’s Critique of Waltz in Economics
Contexto Internacional, 2021 This paper identifies changes in the center-periphery structure due to transformations in capitalism since 1970. In its new configuration, capitalism not only altered center-periphery relations but also exerted impact upon peripheral units that affect ...
Sylvia Ferreira Marques
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Journal of Chemical Education, 2019 In November 2018, a revision of the International System of Units (Systeme International, SI) was approved at the 26th meeting of the General Conference on Weights and Measures (CGPM). What are the implications of the revision of all seven definitions of
C. Giunta
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