Design and Performance of a New Type Galitzin Gravity Meter |
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Contents
METHODS OF MEASURING GRAVITATIONAL EFFECTS | 5 |
GENERAL PROBLEMS ENCOUNTERED IN DESIGN | 10 |
DETAILS OF CONSTRUCTION OF GRAVITY METER 25 | 25 |
2 other sections not shown
Common terms and phrases
0.1 milligal accuracy adjustment aluminum cylinder Astatisation astatization axis of rotation b₂ basalt beam bean Bouguer correction Calibration center of mass centimeter changing the tension clamping consideration constant force construction Corrected gravity difference density Distance from fault drift dynes per gram earth elevator test Elinvar factor fault plane field curve floors force of gravity GALITZIN geophysical gravimeter gravity meter groove heat attenuating cylinder hysteresis initial length instru instrument proper inverse square law L-shaped arms main springs mass means measured ment mercury method milligal per hour milligals per division motion mounted normal correction null instrument obtained Orientation Test PINE CITY pivot plane in feet plunger region relay Scale Reading Milligals screws sensitivity sero shaft shear modulus shown in Fig spring material standard curves suspensions temperature coefficient tension in spring thermostat Tilt tion top plate torque torsion balance University of Minnesota upthrow side value of gravity wire zero