Table T2. Nomenclature.
| Variable | Meaning | Dimensions | Value |
|---|---|---|---|
| H | Distance particle falls | cm | Variable |
| ρw | Mass density of water | g/cm3 | 0.9975412 |
| Gs | Specific gravity | Dimensionless | 2.70 |
| μ | Viscosity of fluid | mPa·s | 9.53 × 10–6 |
| t | Time for fall | Minutes | Variable |
| g | Acceleration due to gravity | cm/s2 | 980 |
| D | Diameter of particle | mm | Variable |
| Nm | Percent finer material at reading m | Percent | Variable |
| V | Volume of suspension | cm3 | 1000 |
| MD | Dry soil mass of hydrometer specimen | g | Variable |
| ρc | Mass density of water at the calibration temperature | g/cm3 | 0.9975412 |
| rm | Hydrometer reading in suspension at time, t, and temperature, T | Dimensionless | Variable |
| rw, m | Hydrometer reading in water with dispersant at the same temperature as for rm | Dimensionless | 1004.0 |
| m | Reading number |
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