Physics, made approachable
Explore the Physics is a free, open library of physics notes written in plain language by educators who care about intuition first.
Our mission
Most physics resources fall into one of two camps: dry textbooks that explain everything but inspire nobody, or breezy pop-science that excites you without ever giving you a real foothold. We sit firmly in the middle.
We believe physics is best learned through intuition first, formulas second.
What makes us different
Notes, not articles
Every page is structured for studying — clear headings, a sticky table of contents, and a tooltip glossary baked in.
Real authors
Each note is signed by someone who actually teaches the material. Click an author to see everything they wrote.
Built-in glossary
Tricky terms hover to reveal a definition — and every term has its own page in the global glossary.
Reads anywhere
Mobile-first, accessibility-friendly, and fast. No popups, no auto-play video.
Always free
No paywall, no email sign-up to read, no premium tier. Just notes.
Constantly updated
We add new notes regularly and revise old ones whenever we find a better way to explain something.
Ready to dive in?
Pick where you want to start.
Get in touch
Have a question or suggestion? Send us a message.