Physics

Understand motion, energy, matter, fields, relativity, quantum theory, and the physical laws behind technology and the universe.

Start Here

Build intuition first: motion, forces, energy, waves, electricity, and magnetism.

Khan Academy Physics

Visual Learning

See the ideas before drowning in equations.

Physics VideosPhysics for Beginners

Electricity & Magnetism

Fields, circuits, waves, radio, motors, sensors, and real engineering.

Electrical Engineering Basics

Quantum Physics

Particles, probability, measurement, wave behavior, and modern computing ideas.

Quantum for Beginners

Relativity

Space, time, gravity, and the large-scale structure of reality.

Relativity Explained

Reference

Problem solving and deeper study.

OpenStax College Physics