About CoursesOnPhysics
What this is
CoursesOnPhysics is a free, open physics education site built on a simple conviction: the laws of nature are accessible to anyone willing to follow a careful argument.
The project is still growing. Right now the site focuses on introductory material that builds strong foundations, published as short courses, standalone explanations, and longer course sequences where the subject calls for them. Everything is free, with no accounts and no paywalls.
The teaching style starts from physical meaning and intuition. Equations matter, but they should emerge from understanding rather than stand in for it.
The intended audience is broad: curious beginners, self-learners, students who want a clearer foundation, and anyone who prefers understanding to formula memorization.
Why it's free
Physics education should not be behind a paywall. Anyone curious about how the world works deserves access to clear, honest, well-written explanations, and the web is the right place to provide them.
The author
This site is written and maintained by a physicist (PhD) whose teaching style is to explain things from first principles without hiding the structure of the argument.
The project grew out of years of public lectures on physics and astrophysics, including many given from inside an observatory dome. CoursesOnPhysics brings that same approach to the web: careful, rigorous, and accessible without assuming too much too early.
Writing and AI assistance
AI tools may assist with drafting and refining prose. All physical arguments, pedagogical decisions, examples, equations, and final editorial judgments are made and reviewed by the author before publication.
Accuracy and liability
All content is carefully reviewed before publication, but errors are still possible. The material on this site is provided for educational purposes, without any guarantee of completeness or fitness for a particular use.
Reuse and licensing
All course content on this site is published under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.
You are free to share and adapt the material for non-commercial purposes, provided you give appropriate credit and link back to this site. See the License page for full details.
Contact
Questions, suggestions, or spotted an error? Reach out at coursesonphysics@gmail.com.
If you want to start reading, begin from the home page and follow the topic or course that matches your background.