Library Silos — All Physics Topics by Area
PhysicsTheories.com organises every page into 12 topical silos. Each silo is a self-contained route from foundations to research, with linked formulas, calculators, articles, and worked examples.
- Mechanics — force, motion, energy, momentum, oscillations, rigid bodies.
- Electromagnetism — electric and magnetic fields, Maxwell's equations, circuits, EM waves.
- Thermodynamics — heat, entropy, the four laws, statistical mechanics.
- Quantum physics — wavefunctions, operators, entanglement, quantum information.
- Relativity — special, general, black holes, gravitational waves.
- Astrophysics — stars, galaxies, cosmology, the early universe.
- Nuclear & particle physics — nuclei, Standard Model, accelerators.
- Cosmology — Friedmann equations, inflation, the CMB, fate of the universe.
- Optics — geometric and wave optics, lasers, polarisation, imaging.
- Waves & vibrations — wave motion, acoustics, standing waves, Doppler, dispersion.
- Fluid dynamics — viscosity, Bernoulli, turbulence, hemodynamics, continuum mechanics.
- Math for physics — vectors, calculus, tensors, complex analysis, group theory.
How to choose a silo
A silo is a study route through related pages. It groups concepts that share equations, assumptions, experiments, and common mistakes. Mechanics starts with motion and force because later topics such as energy, momentum, oscillation, and rotation depend on those foundations. Electromagnetism moves from fields to circuits and waves because Maxwell's equations connect all three.
Use the silos when a single article is not enough. If a page introduces entropy, the thermodynamics silo gives the surrounding ideas: heat, temperature, the first and second laws, statistical mechanics, and engines. If a page introduces spacetime curvature, the relativity silo gives the path from special relativity to black holes and gravitational waves.
Suggested study workflow
Start with the hub page for a subject, then read one concept article, one formula page, and one worked example or calculator. After that, return to the hub and choose the next linked idea. This loop prevents isolated memorization because each new topic is tied to a definition, a mathematical relation, and a use case.
The silos also help with review. Before an exam or a self-study session, pick one silo and list the quantities that appear repeatedly. In mechanics those might be displacement, velocity, acceleration, force, work, energy, momentum, torque, and angular velocity. In waves they might be frequency, wavelength, speed, phase, amplitude, and intensity.
As the site grows, new content should enter a silo only when it adds a real step in the learning path: a missing concept, a worked example, a calculator, a comparison, or a historical experiment that clarifies the model.
Where to go next
Maintenance rule for silos
A silo should not become a dumping ground for every page with a related word in the title. Pages belong in a silo when they help a reader move from foundation to application: definition, equation, worked example, comparison, tool, experiment, or deeper article. If a page is too short to teach that step, it should be rewritten or noindexed before being promoted from the silo hub.
This rule also helps internal linking. The strongest pages in a silo should point to each other naturally, so readers can move from a concept to a formula, from a formula to a calculator, and from a calculator back to an article that explains the physical meaning.