## Theory of the torsion balance with a preliminary study of a modification of the instrument to decrease time of gravity measurements |

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### Contents

Introduction | 1 |

Torsion balance | 12 |

Balance dimensions used in Table 1 | 33 |

1 other sections not shown

### Common terms and phrases

angle angular deflection apparatus approximately axes axis balance arm balance beam balance system bridge circuit bridge voltage C. G. S. units center of mass centimeters component of gravity computed constant curvature function determined distance effect Eotvos torsion balance Eotvos units equal equipotential surface force of gravity fringes Geophysik gradient and curvature gradient of gravity grams gravitational constant gravity field gravity potential horizontal forces horizontal gradient inertia instrument lamp lever arm light intensity lower weight measure method minimum radii operation period of oscillation photo-electric cell Pl P2 plane position Pt-Ir quantities radians radii of curvature radius rate of change ratio rotation screen second of arc second partial derivatives shown in Figure sin2 suspended system Taylor's theorem three components tion torsion fiber torsion rod torsion system torsion wire torsion-balance equation torsion-balance system total force unit mass vertical zero