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Gentle lessons covering mechanics, electromagnetism, modern physics and more.
Use the filters below to find lessons by level, difficulty or topic.
Simple Harmonic Motion – Springs, Pendulums and Oscillations
undergrad | intermediate | waves
Explore the basic ideas of simple harmonic motion (SHM) using springs and pendulums, and see how oscillations appear everywhere in physics.
Electric Fields – How Charges Interact at a Distance
school | beginner | electromagnetism
Learn what an electric field is, how to visualize it, and how it helps us understand forces between charges without them ever touching.
Wave-Particle Duality – A Gentle Introduction to Quantum Ideas
undergrad | intermediate | modern-physics
Explore the idea that light and matter can behave like both waves and particles, using simple experiments and calm, intuitive explanations.
Newton's Laws of Motion – A Gentle School-Level Guide
school | beginner | mechanics
Understand Newton's three laws of motion using simple examples from everyday life, and build a strong foundation for all of mechanics.
Work, Energy and Power – Understanding How Energy Moves
school | beginner | mechanics
Learn how work, energy and power are connected, and how they help you solve real-life physics problems in a systematic way.