Courses
Every course is free and open. Filter by stage, or follow the map from red to violet.
Forces All Around
Pushes, pulls, falls and floats: the first rules of how things move.
Light, Sound and Magnets
Shadows, vibrations and invisible fields: the world you can see, hear and feel.
Measuring the World
From protons to galaxies: units, speed, and what temperature really measures.
Energy, Machines and Circuits
Energy never disappears, a lever multiplies your strength, and a circuit needs a loop.
Motion and Newton's Laws
Three laws that explain every push, crash and rocket launch.
Projectiles and Energy
Why every throw makes a parabola, and how to predict speeds with energy instead of forces.
Gravity and Orbits
The force that drops apples also steers the Moon. Learn why orbiting is just falling and missing.
Oscillations and Waves
From a bouncing spring to sonic booms: the mathematics of everything that wiggles.
Light and Optics
Bend light, split it into colours, trap it in a fibre and focus it into images.
Electricity and Magnetism
Charges, fields, circuits and the discovery that runs every power station on Earth.
Heat and Entropy
Gas laws from bouncing molecules, and the one law of physics that knows the past from the future.
Relativity
Time stretches, lengths shrink, mass is energy, and gravity is the shape of spacetime.
The Quantum World
Light comes in packets, electrons behave like waves, and atoms glow in exact colours.
Mechanics Reimagined
One principle behind all of Newton's laws, and the chaos hiding inside them.
Nuclei, Particles and the Cosmos
From the smallest building blocks to the history of the whole universe.
The Story of Physics
2,500 years of brilliant guesses, careful experiments and arguments across many cultures.