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Gavioso RM, Ripa DM, Steur PP, et al. Progress towards the determination of thermodynamic temperature with ultra-low uncertainty. Philos Trans A Math Phys Eng Sci. 2016;374(2064):20150046doi: 10.1098/rsta.2015.0046.
Gavioso, R. M., Ripa, D. M., Steur, P. P., Gaiser, C., Zandt, T., Fellmuth, B., de Podesta, M., Underwood, R., Sutton, G., Pitre, L., Sparasci, F., Risegari, L., Gianfrani, L., Castrillo, A., & Machin, G. (2016). Progress towards the determination of thermodynamic temperature with ultra-low uncertainty. Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 374(2064), 20150046. https://doi.org/10.1098/rsta.2015.0046
Gavioso, Roberto M, et al. "Progress towards the determination of thermodynamic temperature with ultra-low uncertainty." Philosophical transactions. Series A, Mathematical, physical, and engineering sciences vol. 374,2064 (2016): 20150046. doi: https://doi.org/10.1098/rsta.2015.0046
Gavioso RM, Ripa DM, Steur PP, Gaiser C, Zandt T, Fellmuth B, de Podesta M, Underwood R, Sutton G, Pitre L, Sparasci F, Risegari L, Gianfrani L, Castrillo A, Machin G. Progress towards the determination of thermodynamic temperature with ultra-low uncertainty. Philos Trans A Math Phys Eng Sci. 2016 Mar 28;374(2064):20150046. doi: 10.1098/rsta.2015.0046. PMID: 26903096.
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Philos Trans A Math Phys Eng Sci. 2016 Mar 28;374(2064):20150046. doi: 10.1098/rsta.2015.0046.

Progress towards the determination of thermodynamic temperature with ultra-low uncertainty.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Roberto M Gavioso, Daniele Madonna Ripa, Peter P M Steur, Christof Gaiser, Thorsten Zandt, Bernd Fellmuth, Michael de Podesta, Robin Underwood, Gavin Sutton, Laurent Pitre, Fernando Sparasci, Lara Risegari, Livio Gianfrani, Antonio Castrillo, Graham Machin

Affiliations

  1. Istituto Nazionale di Ricerca Metrologica (INRiM), 91 Strada delle Cacce, 10135 Torino, Italy [email protected].
  2. Istituto Nazionale di Ricerca Metrologica (INRiM), 91 Strada delle Cacce, 10135 Torino, Italy.
  3. Physikalisch-Technische Bundesanstalt (PTB), Abbestrasse 2-12, 10587 Berlin, Germany.
  4. National Physical Laboratory (NPL), Teddington TW11 0LW, UK.
  5. Laboratoire Commun de Métrologie, LNE-CNAM, 61 Rue du Landy, 93210 La Plaine Saint-Denis, France.
  6. Dipartimento di Matematica e Fisica, Seconda Università di Napoli, Viale Lincoln 5, 81100 Caserta, Italy.

PMID: 26903096 DOI: 10.1098/rsta.2015.0046

Abstract

Previous research effort towards the determination of the Boltzmann constant has significantly improved the supporting theory and the experimental practice of several primary thermometry methods based on the measurement of a thermodynamic property of a macroscopic system at the temperature of the triple point of water. Presently, experiments are under way to demonstrate their accuracy in the determination of the thermodynamic temperature T over an extended range spanning the interval between a few kelvin and the copper freezing point (1358 K). We discuss how these activities will improve the link between thermodynamic temperature and the temperature as measured using the International Temperature Scale of 1990 (ITS-90) and report some preliminary results obtained by dielectric constant gas thermometry and acoustic gas thermometry. We also provide information on the status of other primary methods, such as Doppler broadening thermometry, Johnson noise thermometry and refractive index gas thermometry. Finally, we briefly consider the implications of these advancements for the dissemination of calibrated temperature standards.

© 2016 The Author(s).

Keywords: Boltzmann constant; International Temperature Scale; thermodynamic temperature

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