## Proceedings of the International School of Physics "Enrico Fermi.", Volume 11N. Zanichelli, 1960 - Nuclear physics |

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Page 180

The curves in the upper diagram tell how much

any specified value of the

of the rate of expansion , H , or of the extrapolated time back to the start of ...

The curves in the upper diagram tell how much

**present**density is required forany specified value of the

**present**age of the universe and for any**present**valueof the rate of expansion , H , or of the extrapolated time back to the start of ...

Page 181

There the hatching indicates known sources of mass - energy and approximate

uncertainty limits on

energy for which no

There the hatching indicates known sources of mass - energy and approximate

uncertainty limits on

**present**values . Among the potential sources of mass -energy for which no

**present**estimates are available are two ( neutral H and anti ...Page 251

In the

investigations of nuclear B - decay contributing towards the determination of of

the coupling constants in the B - decay interaction . Instead of presenting the

historical ...

In the

**present**paper a review is given of the most important experimentalinvestigations of nuclear B - decay contributing towards the determination of of

the coupling constants in the B - decay interaction . Instead of presenting the

historical ...

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### Contents

GENERALITÀ | 1 |

PARTE PRIMA Problemi teorici | 9 |

PARTE SECONDA Correlazioni angolari polarizzazioni e decadimenti beta | 251 |

3 other sections not shown

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### Common terms and phrases

allowed angle angular assumed calculated charge classical combination completely component connection conservation consider constant contribute correlation corresponding coupling curvature decay defined density dependence derived described determination direction discussed effects electric electromagnetic field electron element elementary emission energy equations example existence experiment experimental expression factor Fermi field final finds formula function geometrodynamics geometry give given gravitational histories initial interaction invariance known leads limit magnetic mass matrix means measured metric modes momentum neutrino neutron nuclei observed obtained operators pairs parity particle phase Phys physics polarization possible present principle problem properties purely quantity quantum quantum mechanics question radiation ratio reason reference relation relativity respect result scattering shown shows solution space spin spinor symmetry Table theory transformation transition universe vector wave weak zero