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

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Page 150

Many different sequences of operations can define one and the same physical

quantity . For instance , length can be measured either by

or by

Many different sequences of operations can define one and the same physical

quantity . For instance , length can be measured either by

**means**of a yardstick ,or by

**means**of an optical triangulation , or by**means**of a radar set , and so on .Page 182

which

E ~ d ; = li if and only if y evid ; = r ; ) + , if and only if ye [ ay / Prob : ( { r ; } ) = 1 ] + ,

if and only if y is orthogonal to the ( normalized ) eigenvector of g ( Qi ) with ...

which

**means**: with certainty the value for the quantity Qi in the state y is ri ; ( 72 )E ~ d ; = li if and only if y evid ; = r ; ) + , if and only if ye [ ay / Prob : ( { r ; } ) = 1 ] + ,

if and only if y is orthogonal to the ( normalized ) eigenvector of g ( Qi ) with ...

Page 268

If a quantummechanical system is described by a state vector QEH , the equation

PAQ = q ( eigenvalue 1 )

eigenvalue 0 ) that pe A , which

...

If a quantummechanical system is described by a state vector QEH , the equation

PAQ = q ( eigenvalue 1 )

**means**that pe A , and the equation Pap = 0 (eigenvalue 0 ) that pe A , which

**means**that the vector q has no component in the...

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### Contents

Gradual infiltration of probabilitys laws into physical sciences | 1 |

Statistical fluctuations | 10 |

Introduction | 21 |

Copyright | |

24 other sections not shown

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### Common terms and phrases

according additive appear applied approach argument assume atoms Borel called classical closed complete concept consider constant corresponding countable course defined definition derived described determined dialog discussion distribution dynamics edited effect elementary elements energy equal equation equivalent example exists experiment expressed fact field final finite formal frequency function geometry give given Hence implies initial interpretation lattice limit logical mass material mathematical means measurement motion natural observable obtain operator particle particular Phys physical positive possible precision present principle probability problem proof propositions proved quantity quantum mechanics question reason refer relation relative represented requirement respect result rules satisfies sense sequence space space-time special relativity statistical structure theorem theory transformation turn unit Universe vector