| Field Type | Involving... | Solving... | Units |
|---|---|---|---|
| 重力 Gravitational | 群眾互動 Interaction of Masses | Σ M → G → m | $$ \left [{N \over kg} \right ] = \left [{m \over s^2} \right ] $$ |
| 電力 Electric | 電荷互動 Interaction of Charges | Σ Q → E → q | $$ \left [{N \over C} \right ] = \left [{V \over m} \right ] $$ |
| 磁力 Magnetic | 運動電荷互動 Interaction of Moving Charges | ΣI=Σ(Q/t) → B → i=q/t | $$ \left [ T \right ] = \left [{N \over C} {s \over m} \right ] $$ |