Content: New Handbook Chapters & Topics

We want to expand the Handbook into a comprehensive reference for physics. We are looking for new chapters and deeper dives into existing ones. **Any physics topic is welcome!** If you notice an area of physics that isn't covered yet, feel free to suggest it or start a draft.

Suggested Areas (but not limited to):

- Dynamics: Newton’s Laws, friction, and tension.
- Energy: Work-energy theorem, potential energy, and conservation.
- Electromagnetism: Fields, circuits, and Maxwell's equations.
- Quantum Mechanics: Historical experiments and wave-particle duality.
- Thermodynamics: Laws of thermodynamics and heat transfer.

**How to contribute**:
Check the current list of topics in the code and suggest a new entry or help expand a summary with more detailed explanations and derivations.