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.In any case, from the point of view of semantics van Fraassen has previously treated the observational and the theoretical symmetrically.This issue is discussed in more detail in Demopoulos & Friedman (1989), and Psillos (1999, chapter 3).A careful reader might object that there is some unclarity in the Hertz quote about whether the notion of equation includes a physical interpretation of its terms.Couldn't it be the case that some non-electromagnetic domain could in principle be said to satisfy Maxwell's equations? Is it clear that Hertz would not allow this? If Hertz allowed for this, then we would like to make clear that his position is modified: it is equations interpreted in the language of the theory that we are interested in.But it is not hard to see that for Hertz too the possible interpretations of Maxwell's equations are doubly constrained.They are constrained from below: as he explicitly said in the quoted passage, the interpretation of Maxwell's equations should be able to account for the same “possible phenomena”.But they are also constrained from above.Hertz's embarkation on the problems of the foundations of mechanics (1894) was motivated by his attempt to unify the mechanical picture of the world with the then emerging electromagnetic picture.For more on the relationship between idealisation and abstraction, see Nowak & Nowakowa (2000, 116-7).Suppe (1989, 85) also relates idealised models to counterfactual situations [ Pobierz całość w formacie PDF ]
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.In any case, from the point of view of semantics van Fraassen has previously treated the observational and the theoretical symmetrically.This issue is discussed in more detail in Demopoulos & Friedman (1989), and Psillos (1999, chapter 3).A careful reader might object that there is some unclarity in the Hertz quote about whether the notion of equation includes a physical interpretation of its terms.Couldn't it be the case that some non-electromagnetic domain could in principle be said to satisfy Maxwell's equations? Is it clear that Hertz would not allow this? If Hertz allowed for this, then we would like to make clear that his position is modified: it is equations interpreted in the language of the theory that we are interested in.But it is not hard to see that for Hertz too the possible interpretations of Maxwell's equations are doubly constrained.They are constrained from below: as he explicitly said in the quoted passage, the interpretation of Maxwell's equations should be able to account for the same “possible phenomena”.But they are also constrained from above.Hertz's embarkation on the problems of the foundations of mechanics (1894) was motivated by his attempt to unify the mechanical picture of the world with the then emerging electromagnetic picture.For more on the relationship between idealisation and abstraction, see Nowak & Nowakowa (2000, 116-7).Suppe (1989, 85) also relates idealised models to counterfactual situations [ Pobierz całość w formacie PDF ]