Internal consistency in the determination of the Boltzmann constant using a quasispherical resonator

2013 ◽  
Author(s):  
M. de Podesta ◽  
R. Underwood ◽  
G. Sutton ◽  
P. Morantz ◽  
P. Harris
Keyword(s):  
Internal Consistency ◽  
Boltzmann Constant ◽  
Quasispherical Resonator

Simple experimental determination of the Boltzmann constant using a volatile liquid

2021 ◽  
Author(s):  
Marcela P Escobar ◽  
R A Zarate ◽  
Francisco Alejandro Calderon ◽  
Sergio Curilef
Keyword(s):  
Experimental Determination ◽  
Boltzmann Constant ◽  
Volatile Liquid

scholarly journals The NIST Johnson Noise Thermometry System for the Determination of the Boltzmann Constant

2017 ◽  
Vol 122 ◽  
Author(s):  
Nathan E. Flowers-Jacobs ◽  
Alessio Pollarolo ◽  
Kevin J. Coakley ◽  
Adam C. Weis ◽  
Anna E. Fox ◽  
...  
Keyword(s):  
International System ◽  
Standard Uncertainty ◽  
Boltzmann Constant ◽  
Correlated Noise ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Relative Standard ◽  
System Of Units ◽  
Johnson Noise Thermometry

In preparation for the redefinition of the International System of Units (SI), five different electronic measurements of the Boltzmann constant have been performed using different Johnson noise thermometry (JNT) systems over the past seven years. In this paper, we describe in detail the JNT system and uncertainty components associated with the most recent National Institute of Standards and Technology (NIST) determination of the Boltzmann constant: k = 1.380642 9(69) × 10−23 J/K, with a relative standard uncertainty of 5.0 × 10−6 and relative offset of −4.05 × 10−6 from the Committee on Data for Science and Technology (CODATA) 2014 recommended value. We discuss the input circuits and the approach we used to match the frequency response of two noise sources. We present new measurements of the correlated noise of the 4 K on-chip resistors in the quantum-accurate, pseudorandom, voltage-noise source, which we used to estimate the correlated, frequency-dependent, nonthermal noise in our system. Finally, we contrast our system with those used in other measurements and speculate on future improvements.

Progress towards an acoustic determination of the Boltzmann constant at CEM-UVa

Metrologia ◽  
2015 ◽  
Vol 52 (5) ◽  
pp. S257-S262 ◽  
Author(s):  
Fernando J Pérez-Sanz ◽  
José J Segovia ◽  
M Carmen Martín ◽  
Miguel A Villamañán ◽  
Dolores del Campo ◽  
...  
Keyword(s):  
Boltzmann Constant

Assessment of Uncertainty in the Determination of the Boltzmann Constant by an Acoustic Technique

2010 ◽  
Vol 32 (1-2) ◽  
pp. 413-426 ◽  
Author(s):  
Michael de Podesta ◽  
Gavin Sutton ◽  
Robin Underwood ◽  
Michael Perkin ◽  
Stuart Davidson ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Acoustic Technique

Determination of the Critical Success Factors (CSF) in the Implementation of Six Sigma (SS) and Its Sustainable Benefits

2020 ◽  
pp. 261-280
Author(s):  
Aida López ◽  
Jesús A. Hernández Gómez ◽  
Karla I. Velázquez Victorica ◽  
Vianey Torres Argüelles ◽  
Salvador Noriega Morales ◽  
...  
Keyword(s):  
Continuous Improvement ◽  
Internal Consistency ◽  
Six Sigma ◽  
Success Factors ◽  
Measurement Instrument ◽  
Environmental Care ◽  
Critical Success ◽  
Main Factors ◽  
Correct Implementation

Currently, organizations seek to position themselves in the market as the most competitive and profitable in their branch, through the continuous improvement of their processes, products, and/or services, applying various techniques, tools, and methodologies. Particularly in this chapter, focus on Six Sigma (SS) will be shown, a strategy used in companies to achieve competitive objectives, continuously improving processes. In this sense, it is considered important to identify and know the main factors that are involved in its implementation. Likewise, the organizations are presenting a culture towards the sustainability and the environmental care, derived from this, the methodology used to develop a measurement instrument that allows to identify the CSF in the implementation of SS, the sustainable benefits that can be achieve with correct implementation, the procedure used for the validation of the content of the instrument, the validity of internal consistency and the obtained results.

scholarly journals An improved electronic determination of the Boltzmann constant by Johnson noise thermometry

Metrologia ◽  
2017 ◽  
Vol 54 (4) ◽  
pp. 549-558 ◽  
Author(s):  
Jifeng Qu ◽  
Samuel P Benz ◽  
Kevin Coakley ◽  
Horst Rogalla ◽  
Weston L Tew ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Johnson Noise Thermometry

scholarly journals Determination of the Boltzmann constant with cylindrical acoustic gas thermometry: new and previous results combined

Metrologia ◽  
2017 ◽  
Vol 54 (5) ◽  
pp. 748-762 ◽  
Author(s):  
X J Feng ◽  
J T Zhang ◽  
H Lin ◽  
K A Gillis ◽  
J B Mehl ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Acoustic Gas Thermometry ◽  
Gas Thermometry

New determination of the Boltzmann constant with an acoustic method

CPEM 2010 ◽  
2010 ◽  
Author(s):  
L. Pitre ◽  
F. Sparasci ◽  
A. Guillou ◽  
D. Truong ◽  
Y. Hermier ◽  
...  
Keyword(s):  
Acoustic Method ◽  
Boltzmann Constant
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