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21 results

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  • Unified Theories and Unified Science
  • Robert L. Causey
  • Journal: PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association / Volume 1974 / 1974
  • Published online by Cambridge University Press: 28 February 2022, pp. 2-13
  • Print publication: 1974
  • View extract

    Discussions of unified science frequently suppose that the various scientific theories should be combined into one unified theory, and it is usually supposed that this should be done by successive reductions of the various theories to some fundamental theory. Yet, there has been little systematic study of the characteristics of unified theories, and little foundational support for the use of reductions as a unifying procedure.

    In this paper I: (a) briefly review some of my previous work on microreductions, (b) state some conditions which are necessary in order for a theory to be unified, (c) argue that when certain identities exist between the elements in the domains of two theories, then the only satisfactory way to combine these two theories into one unified theory is by a microreduction, and (d) indicate briefly some further applications and consequences of this work.

  • Derived Measurement, Dimensions, and Dimensional Analysis
  • Robert L. Causey
  • Journal: Philosophy of Science / Volume 36 / Issue 3 / September 1969
  • Published online by Cambridge University Press: 14 March 2022, pp. 252-270
  • Print publication: September 1969
  • View abstract

    This paper presents a representational theory of derived physical measurements. The theory proceeds from a formal definition of a class of similar systems. It is shown that such a class of systems possesses a natural proportionality structure. A derived measure of a class of systems is defined to be a proportionality-preserving representation whose values are n-tuples of positive real numbers. Therefore, the derived measures are measures of entire physical systems. The theory provides an interpretation of the dimensional parameters in a large class of physical laws, and it accounts for the monomial dimensions of these parameters. It is also shown that a class of similar systems obeys a dimensionally invariant law, which one may safely subject to a dimensional analysis.

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