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2 results

  • 3 - Kuhn’s “Fifth Law of Thermodynamics”

  • from Part II - Normal Science and Science Education
  • Edited by K. Brad Wray, Aarhus Universitet, Denmark
  • Book:
    Kuhn's <i>The Structure of Scientific Revolutions</i> at 60
    Published online:
    05 January 2024
    Print publication:
    18 January 2024, pp 55-78

  • Summary

    This chapter reconstructs Kuhn’s philosophy of measurement and data, paying special attention to what he calls the “fifth law of thermodynamics.” According to this law, there will always be discrepancies between experimental results and scientists’ prior expectations. The history of experiments to determine the values of the fundamental constants offers a striking illustration of Kuhn’s fifth law of thermodynamics, with no experiment giving quite the expected result. The chapter highlights the synergy between Kuhn’s view and the systematic project of iteratively determining the value of physical constants, initiated by spectroscopist Raymond Birge, which was ongoing when Kuhn joined Berkeley in 1956. The analysis sheds light on various underappreciated aspects of Kuhn’s thought, especially his notion of progress as improvement in measurement accuracy.