Physics practice hub · problems · solutions · recommendations

Learn physics by solving and keep score.

Problempedia.org is a simple one-page start for a site where you can: solve physics problems, publish your own, and later get smart “what to solve next” recommendations.

Start with curated physics tasks (mechanics to E&M to thermo to QM).
Publish your own problems and collect solutions.
Recommendation system that suggests what to solve next based on your progress.
Weekly challenge: one problem, many solutions - first correct solution gets their name on top (Codeforces-style).

See a simple roadmap Send a suggestion GitHub repo

curation self-study solutions leaderboard recommendations

Current features

If the goal is "botat' physics myself", the killer feature early is a frictionless loop: pick to solve to submit to review to next.

Day 1 MVP

Problem list and submit link

Week 1

Tags, difficulty, and progress

Week 2

Weekly challenge and scoreboard

Later

Recs and parsing

Nice additions (for grad-level use)

Topic tracks: Classical Mech (Lagrange/Hamilton), E&M, Statistical Physics, Quantum, GR, QFT (later).
Solution templates: LaTeX blocks, diagrams, “common tricks”, and links to prerequisites.
Spaced repetition for concepts you missed (review queue).

If you want, you can start as a static site and later swap the “Submit a solution” button to a real backend.

Features (simple & clear)

Start minimal, then build toward the “recommend what to solve next” vision.

1) Start with physics tasks

Curated sets with tags, difficulty, prerequisites, and estimated time.

2) Publish your own tasks

Share problems, accept solutions, and keep a clean canonical statement and editorial.

3) Recommendations

Based on solved problems, topics, and what you struggled with - suggest the next best task.

4) Challenge of the week

One problem, a live leaderboard, and recognition for first correct solutions.

Roadmap (so you can actually start using it)

MVP (today): one-page list of problems, links, and a simple "submit solution" form (even Google Form).
Next: add tags, difficulty, and a progress tracker (localStorage works at first).
Weekly challenge: featured problem, submissions, manual verification, and top list.
Then: user accounts, database, and real moderation.
Later: parsing/import pipeline and recommendation engine.

FAQ

What would make me personally use this every day?

A "next problem" button that always gives you the right difficulty and topic, plus a streak/progress view. Also: super low friction to paste a solution (LaTeX and images) and mark it "done".

How can this start without a backend?

Keep it static. Store progress in the browser (localStorage), collect solutions via a form link, and publish weekly winners manually. Upgrade to a backend only when it’s painful.

Grad classes - what tracks would you include first?

Classical mechanics (Lagrangian/Hamiltonian), E&M, statistical mechanics, quantum mechanics. Later: GR and QFT, once the earlier tracks have enough depth and problems.

Contact

Want to add an idea (features, structure, sources of problems, or how to run the weekly challenge)?

Email: aliaksandr@melnichenka.com