## Proceedings of the International School of Physics "Enrico Fermi.", Volume 72N. Zanichelli, 1979 - Nuclear physics |

### From inside the book

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Page 29

The concept of

observer and what he observes, a separation which has deep and controversial

roots in the philosophy of science. By

The concept of

**physical system**corresponds to the separation between theobserver and what he observes, a separation which has deep and controversial

roots in the philosophy of science. By

**physical system**it is meant a portion ...Page 34

arrangement which, after interaction with the

only two possible outcomes » as the definition of « proposition ». In this section,

we discuss this point using the notion of state, but leaving aside the notion of ...

arrangement which, after interaction with the

**physical system**, produces one ofonly two possible outcomes » as the definition of « proposition ». In this section,

we discuss this point using the notion of state, but leaving aside the notion of ...

Page 150

The purpose of the operational definition of a physical quantity is to ensure, as far

as possible, 1) that we know what we are talking about, and 2) that any ... We will

be talking of (isolated)

The purpose of the operational definition of a physical quantity is to ensure, as far

as possible, 1) that we know what we are talking about, and 2) that any ... We will

be talking of (isolated)

**physical systems**and of procedures of measurement.### What people are saying - Write a review

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### Contents

E Amaldi Radioactivity a pragmatic pillar of probabilistic | 1 |

Statistical fluctuations | 10 |

Final remarks | 21 |

Copyright | |

24 other sections not shown

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### Common terms and phrases

3-geometry algebra applied assertion atoms axioms Boolean Borel field Borel sets calculus concept conditional probability conditionalization consider corresponding countable course defined definition denote derived deterministic dialog dialog-game disjoint dynamics edited Einstein elements equation equivalent exists experiment finite formal function geometry given Gleason's theorem Hence Hilbert space implies induction initial interaction interpretation irreversible Journ linear magnitude Math mathematical means Neumann non-Boolean notion observable orthogonal orthomodular lattice particle photon Phys physical quantity physical system physical theories physicists positive precision probabilistic probability measure probability space probability theory problem procedure quantum logic quantum mechanics quantum theory quantum-logical question radioactive random variable real numbers relation relative frequency relf represented respect result rule sequence space-time special relativity spin statistical operator subset subspace superspace theorem tion transformation truth universal constants vector velocity von Neumann algebra zero