## Philosophical MagazineTaylor & Francis., 1912 - Physics |

### From inside the book

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Page 343

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**approximately**and - = 0**approximately**the aggregate of the terms in @ is smaller than it otherwise would be ; the terms in 20 add to it if e be large , but subtract from it if e be small . Those in 30 do the same . 8. Turning now to the ...Page 983

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**approximately**the relation between and A ; so that the assumption that the energy necessary for an a particle to escape is the same in all cases appears to be**approximately**true . The two lines are parallel , so that for both series of ...Page 994

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**approximately**propor tional , provided the range of penetrating power experimented upon does not include or approach on the more penetrating side the penetrating power of a fluorescent radiation charac- teristic of either A or B. If we ...### Contents

SIXTH SERIES | 1 |

Dr Herbert Stansfield and Mr H P Walmsley on Changes | 25 |

Dr J R Ashworth on the Magnetic Temperature Coefficients | 36 |

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absorption actinium æther alpha rays aluminium angle apparatus approximately assumption atom bands calculated carbon carriers cathode cent charge chlorine coefficient collision constant contact difference corresponding curve deflexion delta rays density determined difference of potential distance drops effect electric electrometer electrons electroscope emission emitted energy equal equation equilibrium ethyl bromide expansion experimental experiments field flame formula gases give given glass heat hydrogen increase intensity ionization ionization current ionization produced isoclinic lines J. J. Thomson light liquid magnetic maximum means measured mercury metal method millimetres molecules motion number of ions observed obtained paper particles Phil plate platinum polonium positive potential difference pressure quantity quartz quaternion radiation radioactive radium ratio reflexion salt secondary shown solution spectrum strip strontium suppose surface Table temperature theory thorium tube values vapour velocity vessel volts wave-length zero