Psychology Dictionary of Arguments

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Quantities, physics: Quantities in physics are measurable properties of objects, processes or states. See also Scales, Proportions, Change, Motion, Processes, Flux, Space, Time, Spacetime, Metrisability, Measurements.
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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
Author Concept Summary/Quotes Sources

Bas van Fraassen on Quantities (Physics) - Dictionary of Arguments

I 44
Quantities/physics/Newton: a) absolute quantities: they appear in the axioms (not perceivable) - b) perceivable quantities ("sensible") - these are determined experimentally. >Experiments
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I 45
Apparent movement/Copernicus: there is a difference between the true motion of the earth and the true motions of the planets.
"true"/Copernicus: = is relative to the sun.
Relative motions/Newton: (all observable motions) is always identifiable as the difference between true motions.
Phenomena/Fraassen: we call these relative (relational) structures phenomena.
Movements/Fraassen: movements are the structures that the perceived motions show (phenomena) - phenomenon: is always identifiable with movements in a model -> "empirical structures": >Quantities/Physics/Fraassen >Measurements.
Absolute acceleration/Newton: absolute acceleration produces strain and compression in the phenomena - Newton: if the center were in another constant absolute motion (not acceleration) the phenomena would not change - "because force is associated with acceleration, not velocity". Empirical adequacy: there is a model so that all phenomena are identifiable with movements in the model (also historical and not perceived ones). >Absoluteness.
Empirically equivalent: are two theories if they have both models that do this. >Models.

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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Fr I
B. van Fraassen
The Scientific Image Oxford 1980


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