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Home > Members > Members Webpages > GRÉGIS Fabien


Associate researcher at SPHERE laboratory (UMR 7219)
PhD in History and Philosophy of Science

Me contacter
Academia Page

My resume:

CV english 2018-06-12
CV français 2021-06-21

Areas of research

- history and philosophy of physics
- history and philosophy of measurement
- philosophy of probabilities and statistics


  • Do quantities have true values? On the problem of non-uniqueness in measurement, in preparation
  • de Courtenay, N., Grégis, F., Lacki, J. and Proust, C. (2021). Introduction, special issue “Measurement at the Crossroads”, forthcoming in Perspectives on Science
  • Grégis, F. (2019). On the meaning of measurement uncertainty, Measurement, 133, pp.41-46, DOI: 10.1016/j.measurement.2018.09.073
  • Grégis, F. (2018) Assessing accuracy in measurement : The dilemma of safety versus precision in the adjustment of the fundamental physical constants”, Studies in History and Philosophy of Science Part A. DOI: 10.1016/j.shpsa.2018.09.001.
  • de Courtenay, N., and Grégis, F., “The evaluation of measurement uncertainties and its epistemological ramifications”, in Chang, H., Mitchell, D. & Tal, E. (eds.), The Making of Measurement, special issue of Studies in History and Philosophy of Science Part A, 2017. DOI:
  • Grégis, F. and de Courtenay, N., « Incertitude de mesure et probabilités: la confrontation des approches fréquentiste et bayésienne en métrologie », in Drouet, I. (ed), Le bayésianisme aujourd’hui. Fondements et pratiques, Éditions Matériologiques, pp.317–391, 2016. Publisher website
  • Grégis, F., “Can we dispense with the notion of ‘true value’ in metrology ?”, in Standardization in Measurement (Lara Huber et Oliver Schlaudt, dir.), Pickering and Chatto Publishers, Londres, 2015.
    Grégis (2015) = Can we dispense with the notion of "true value" in metrology?

  • Tholen, E., Ergül, A., Doherty, E., Weber, F., Grégis, F., Haviland, D., “Nonlinearities and parametric amplification in superconducting coplanar waveguide resonators”, Applied Physics Letters, 90(25), 2007

PhD Thesis

Thesis undergone at SPHERE laboratory, supervised by Olivier Darrigol (Research director - CNRS/University Paris Diderot - Paris 7) and Nadine De Courtenay (Associate professor - University Paris Diderot).

Defended on March 25th: ‟The value of uncertainty: the evaluation of the precision of physical measurements and the limits of experimental knowledge”

>> Link to the thesis at TEL archives ouvertes <<

Grégis - PhD short summary (en)

Formation and academic positions

  • 2019-2020 : post-doctoral fellow at LIUC - Università Cattaneo, Castellanza, Italy
  • 2019 : part-time lecturer at the École Centrale Supélec
  • 2017-2018 : post-doctorate fellow at the Cohn Institute, Tel Aviv University
  • 2015-2017 : part-time lecturer at Université Paris Diderot
  • 2013-2015 : ATER (part-time associate in research and education) at University Paris Diderot
  • 2010 - 2013 : doctoral grant for a PhD at University Paris Diderot
  • 2007 - 2010 : M1 and M2 LOPHISS Paris Diderot - Paris 7
    Master thesis : « De l’erreur à l’incertitude : la théorie de la mesure chez Norman Robert Campbell (1880-1949) », directed by Nadine de Courtenay
  • 2004 - 2007 : L3 and M1 in physics, then preparatory year to French "Agrégation" in physics; ÉNS of Cachan.


  • 2016–2017: lectures in “History and epistemology of measurement”, M2 LOPHISS , University Paris 7 (6 hours)
  • 2014-2017: 2 sessions lecture about “Conducting interviews for history and sociology”, in “Innovation, publics and companies”, M2 LOPHISS , University Paris 7 (6 hours / year, sessions shared with Quentin Lade, Univ. Paris 7)
  • 2013-2015: lecturing in “science and society: popular science and science education”, L3 EICS, University Paris 7 (with Aurélien Féron)

  • 2011-2012 and 2013-2015: TA in Epistemology, history and philosophy of biology and medicine, L1, UFR of Medicine, Paris 7.
  • 2010-2015 : TA in history of science and philosophy of science, M1&M2 LOPHISS, Paris 7.

  • 2007-2010 and 2013-2017 : Physics and chemistry, lecturer for undergraduate students preparing for the competitive exams to the French “Grandes Écoles”, Lycée Louis Le Grand (Paris, 2007–2010 and 2013–2017) and Lycée Sainte Geneviève (Versailles, 2015–2017) (60 hours / year)

Selected communications (full list of communications available here)

  • 2018-04-17 “Standards, units and convention: the case of quantum electrical metrology”, 45th Annual Philosophy of Science Conference, Inter-University Centre, Dubrovnik, Croatia
  • 2017-10-30 “Error, accuracy, and the assessment of uncertainty in the measurement of the fundamental physical constants”, Cohn Institute Seminar, Tel Aviv University, Tel Aviv, Israel
  • 2017-06-26: “The meanings of error and accuracy in the adjustments of the physical constants”, workshop “Perspectives on scientific error”, TiLPS, Tilburg University, Netherlands, 26-27 June 2017
  • 2017-04-21: « L’interprétation probabiliste de l’incertitude de mesure » (“The probabilistic interpretation of measurement uncertainty”), invited speaker to the seminar « Probabilités, Décision, Incertitude » (“Probabilities, Decision, Uncertainty”), IHPST, Paris
  • 2016-11-14: « L’incertitude de mesure au contact entre science et philosophie » (“Measurement uncertainty at the frontier between science and philosophy”), invited speaker to the workshop « Perspectives interdisciplinaires sur l’histoire d’incertitude » (“Interdisciplinary perspectives on the history of uncertainty”), Maison des Sciences de l’Homme et de la Société Sud-Est, Université Nice Sophia Antipolis, Nice, France, November 14th, 2016
  • 2016-07-01 « La notion de précision expérimentale dans les ajustements des constantes de la physique » (“The notion of experimental precision in the adjustments of the physical constants”), 6th international congress of the Société de Philosophie des Sciences, University of Lausanne, Switzerland, June 29th – July 1st, 2016
  • 2016-05-20: “About measurement accuracy and measurement uncertainty”, invited panel speaker at the international workshop “Informal Aspects of Uncertainty Evaluation”, Department of History and Philosophy of Science, University of Cambridge, Cambridge, United Kingdom
  • 2015-07-23 with Nadine de Courtenay: “Grappling with Measurement Uncertainties: Philosophy of Practice and Practice of Philosophy”, international conference “The Making of Measurement”, CRASSH (Centre for Research in the Arts, Social Sciences and Humanities), Cambridge, United Kingdom, 23–24 July 2015
  • 2014-01-13 “Error and uncertainty in contemporary metrology”, invited speaker to the international workshop “Approximations and error in several contexts”, seminar of History and Philosophy of Mathematics, University Paris 7
  • 2013-03-15 “Can we dispense with the notion of true value in metrology?”, international conference “Dimensions of Measurement”, 14–16 March 2013, ZiF (Zentrum für interdisciplinäre Forschung), Bielefeld, Germany
  • 2012-12-04 with Nadine de Courtenay: “Questions raised by the epistemic turn in the Guide to the expression of uncertainty in measurement (GUM)”, international workshop “The taming of measurement uncertainties: Theoretical, philosophical, and practical issues”, University Paris 7
  • 2012-11-22: « L’erreur de mesure, entre incertitude et confiance » (“Measurement error: between uncertainty and confidence”), invited speaker to the 2012 “Cathy Dufour” colloquium on “error in science”, 22–23 November 2012, department of Science and Technology of the University of Lorraine, Vandoeuvre, France

Full list of communications - 43.1 kb