Master Physics Fundamentals Through Interactive Learning

The fundamentals of physics encompass the core principles that govern how the universe works: classical mechanics (motion, forces, energy), thermodynamics (heat and entropy), electromagnetism (electric and magnetic fields), waves and optics (light and sound behavior), and modern physics (quantum mechanics and relativity). These branches form the foundation for understanding everything from how a ball rolls down a ramp to how stars generate energy through nuclear fusion.

Yes, Physics Fundamentals is completely free and always will be. We believe quality physics education should be accessible to every student regardless of financial circumstances. All lessons, simulations, practice problems, and study guides are available at no cost.

Our content is developed by physicists and experienced educators who hold advanced degrees in physics and related fields. Every article, simulation, and problem set undergoes rigorous review to ensure scientific accuracy and pedagogical effectiveness.

We cover the full spectrum of introductory to intermediate physics: kinematics, Newton's laws, energy and momentum, rotational dynamics, thermodynamics, fluid mechanics, waves, sound, optics, electricity, magnetism, circuits, and an introduction to modern physics including special relativity and quantum mechanics.

Unlike a traditional textbook, Physics Fundamentals emphasizes conceptual understanding through interactive simulations you can manipulate, step-by-step visual explanations, and immediate feedback on practice problems. We prioritize building physical intuition before introducing mathematical formalism, which research shows leads to deeper and more lasting comprehension.