| Astronomical Phenomena (89 tracked articles) |
| Biophysical Phenomena (319 tracked articles) |
| Elementary Particles (21 tracked articles) |
| Geological Phenomena (199 tracked articles) |
| Hydrodynamics (13 tracked articles) |
| Magnetic Phenomena (405 tracked articles) |
| Mechanical Phenomena (387 tracked articles) |
| Motion (59 tracked articles) |
| Nuclear Energy (1 tracked article) |
| Optical Phenomena (188 tracked articles) |
| Radiation (243 tracked articles) |
| Scattering, Radiation (5 tracked articles) |
| Thermodynamics (259 tracked articles) |
| Time (1,039 tracked articles) |