TABLE III.
Field masses used in determinations of G. Adapted from Ref. 133.
| Field mass (total) (kg) | Material | Geometry | Measurement principle | References |
|---|---|---|---|---|
| 1.6 | Stainless steel | Spheres | Torsion balance | 57 |
| 21 | Tungsten | Spheres | Torsion balance | 50 |
| 33 | Stainless steel | Spheres | Torsion balance | 53 |
| 45 | Cu 0.7% Te | Cylinders | Torsion balance | 72 |
| 118 | Copper | Rings | Torsion balance | 59 |
| 480 | Tungsten | Cylinders | Double pendulum | 103 |
| 516 | Tungsten | Cylinders | Atom gravimeter | 132 |
| 521 | Tungsten alloy | Cylinders | Free-fall gravimeter | 118 |
| 1 152 | Brass | Cylinders | Double pendulum | 102 |
| 5 775 | Lead | Sphere | Beam balance | 106 |
| 13 520 | Mercury | Cylinder tank | Beam balance | 114 |
| 100 000 | Lead | Rectangular block | Beam balance | 109 |