| Property/Interaction | Gravitation | Weak | Electromagnetic | Strong | |
|---|---|---|---|---|---|
| (Electroweak) | Fundamental | Residual | |||
| Acts on: | Mass - Energy | Flavor | Electric charge | Color charge | Atomic nuclei |
| Particles experiencing: | All | Quarks, leptons | Electrically charged | Quarks, Gluons | Hadrons |
| Particles mediating: | Graviton (not yet observed) |
W+ W- Z0 | γ | Gluons | Mesons |
| Strength in the scale of quarks: | 10−41 | 10−4 | 1 | 60 | Not applicable to quarks |
| Strength in the scale of protons/neutrons: |
10−36 | 10−7 | 1 | Not applicable to hadrons |
20 |
