Learning Paths

What this covers

Each path below lists its steps in order. Steps that link to a live entry can be read now; steps marked [PENDING FULL ENTRY] are planned. Every Codex entry offers three reading levels (Curious, Exploring, Deep Dive), so you can follow a path at whichever depth suits you, and dedicated guided pages with summaries and checkpoints for each path are planned.

Foundations of Classical Mechanics

From Newton's laws to energy and momentum. 8 of 8 steps live. Dedicated guided page: Foundations of Classical Mechanics [PENDING FULL ENTRY].

1. Newton's First Law
2. Newton's Second Law
3. Newton's Third Law
4. Linear Momentum
5. Conservation of Energy
6. Pendulum Simulation
7. Simple Harmonic Oscillator Simulation
8. Isaac Newton

Introduction to Quantum Mechanics

From the photoelectric effect to entanglement. 12 of 12 steps live. Dedicated guided page: Introduction to Quantum Mechanics [PENDING FULL ENTRY].

1. Photoelectric Effect
2. Wave-Particle Duality
3. De Broglie Hypothesis
4. Double-Slit Experiment
5. Wave Function
6. Born Interpretation
7. Schrödinger Equation
8. Particle in a Box
9. Uncertainty Principle
10. Quantum Tunnelling
11. Spin
12. Quantum Entanglement

From Atoms to the Standard Model

The nucleus, radioactivity, quarks and forces. 11 of 11 steps live. Dedicated guided page: From Atoms to the Standard Model [PENDING FULL ENTRY].

1. Atomic Nucleus
2. Radioactive Decay
3. Alpha Decay
4. Beta Decay
5. Half-Life
6. Nuclear Binding Energy
7. Nuclear Fission
8. Nuclear Fusion
9. Quarks
10. Fundamental Forces
11. Standard Model

Astrophysics from Scratch

Stars, their deaths, galaxies and the universe. 16 of 16 steps live. Dedicated guided page: Astrophysics from Scratch [PENDING FULL ENTRY].

1. Stellar Structure
2. Main Sequence
3. Hertzsprung-Russell Diagram
4. Stellar Evolution
5. Red Giants
6. White Dwarfs
7. Supernovae
8. Neutron Stars
9. Stellar Black Holes
10. Milky Way
11. Galaxy Clusters
12. Big Bang Theory
13. Cosmic Microwave Background
14. Dark Matter
15. Dark Energy
16. Fate of the Universe

Maxwell's Equations: Full Treatment

From charge to the unified field equations. 11 of 11 steps live. Dedicated guided page: Maxwell's Equations: Full Treatment [PENDING FULL ENTRY].

1. Electric Charge
2. Coulomb's Law
3. Electric Field
4. Gauss's Law
5. Electric Potential
6. Magnetic Field
7. Biot-Savart Law
8. Magnetic Force
9. Faraday's Law
10. Maxwell's Equations
11. James Clerk Maxwell

History of Quantum Theory

The people and experiments, 1900 to 1935. 7 of 10 steps live. Dedicated guided page: History of Quantum Theory [PENDING FULL ENTRY].

1. Max Planck
2. Albert Einstein
3. Ernest Rutherford
4. Niels Bohr
5. Louis De Broglie [PENDING FULL ENTRY]
6. Werner Heisenberg
7. Erwin Schrodinger [PENDING FULL ENTRY]
8. Wolfgang Pauli
9. Paul Dirac [PENDING FULL ENTRY]
10. Quantum Entanglement

Relativity from Zero

Special relativity to black holes. 11 of 11 steps live. Dedicated guided page: Relativity from Zero [PENDING FULL ENTRY].

1. Postulates of Special Relativity
2. Time Dilation
3. Time Dilation Simulation
4. Length Contraction
5. Lorentz Transformations
6. Mass-Energy Equivalence
7. Equivalence Principle
8. Curved Spacetime
9. Gravitational Time Dilation
10. Schwarzschild Metric
11. Black Holes

Thermodynamics Complete

Laws, engines, gases and statistical mechanics. 8 of 9 steps live. Dedicated guided page: Thermodynamics Complete [PENDING FULL ENTRY].

1. Zeroth Law of Thermodynamics
2. First Law of Thermodynamics
3. Second Law of Thermodynamics
4. Entropy
5. Ideal Gas Law
6. Carnot Cycle
7. Boltzmann Entropy [PENDING FULL ENTRY]
8. Fermi Energy
9. Bose-Einstein Condensation