Branches of physics?

1. Classical mechanics
2. Thermodynamics
3. Electromagnetism
4. Optics
5. Quantum mechanics
6. Relativity
7. Particle physics
8. Astrophysics
9. Condensed matter physics
10. Biophysics

Classical Physics

- Mechanics
- Thermodynamics
- Electromagnetism
- Optics
- Acoustics

Modern Physics

- Quantum Mechanics:
- Particle physics
- Condensed matter physics
- Nuclear physics
- Quantum optics
- Quantum information theory
- General Relativity and Cosmology:
- Astrophysics
- Cosmology
- Gravitational waves
- Black holes
- Other Branches:
- Geophysics
- Biophysics
- Medical physics
- Materials science
- Plasma physics
- Statistical physics
- High-energy physics
- Particle physics
- Nuclear physics
- Astrophysics
- Cosmology