Precision measurements of the Planck and Avogadro constants

Abstract

Precision measurements of the fundamental constants are tour de force of basic metrology, where the useful information is usually beyond the last digit of the measured value. They challenge theoretical models and measurement technologies and set a network of measurement equations on which a universal system of units can be built, which stems from the most basic concepts of physics. Because of their connection with the mass unit, the Avogadro and Planck constants are on the spotlight.

12 pages, 2 figures, submitted to Annalen der Physiks

References in corpus (6)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• New determination of the fine structure constant and test of the quantum electrodynamics
• An accurate determination of the Avogadro constant by counting the atoms in a 28Si crystal
• Combination of Bloch oscillations with a Ramsey-Bordé interferometer : new determination of the fine structure constant
• Measurement of the \{220\} lattice-plane spacing of a ${}^{28}$Si crystal
• Elemental characterization of the Avogadro silicon crystal WASO 04 by neutron activation analysis

Cited by in corpus (8)

• A more accurate measurement of the ${}^{28}$Si lattice parameter
• Lattice strain at c-Si surfaces: a density functional theory calculation
• 30Si Mole Fraction of a Silicon Material Highly Enriched in 28Si Determined by Instrumental Neutron Activation Analysis
• Density functional theory calculations of the stress of oxidised (110) silicon surfaces
• Modernizing the SI: implications of recent progress with the fundamental constants
• Duane -- Hunt relation improved
• Alternative set of defining constants for redefinition of four SI units
• The distribution of the electric current in a watt-balance coil