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All Physics Articles
40 original articles across six branches, each with clear explanations, key formulas, a worked example, common mistakes and practice questions.
Classical Mechanics
Forces, energy, momentum and motion.
Circular Motion and Centripetal Force
2 formulasConservation of Momentum
2 formulasFriction: Static, Kinetic and Rolling
3 formulasNewton's First Law of Motion
1 formulasNewton's Second Law of Motion
3 formulasNewton's Third Law of Motion
1 formulasWork and the Work-Energy Theorem
4 formulasKinematics
Describing motion: velocity, acceleration and trajectories.
Acceleration Explained
2 formulasFree Fall and Gravity
3 formulasProjectile Motion Basics
3 formulasRelative Velocity
1 formulasTerminal Velocity
2 formulasThe SUVAT Equations of Motion
4 formulasElectromagnetism
Charge, current, fields, circuits and magnetism.
Capacitors and Capacitance
3 formulasElectric Charge and Coulomb's Law
2 formulasElectric Fields and Electric Potential
4 formulasMagnetism: Fields, Forces and Compasses
2 formulasOhm's Law and Electric Circuits
4 formulasThe Electromagnetic Spectrum
3 formulasThermodynamics
Heat, temperature, energy and entropy.
Entropy Explained
2 formulasTemperature, Heat and Thermal Energy
2 formulasThe Carnot Cycle and Heat Engines
3 formulasThe First Law of Thermodynamics
2 formulasThe Ideal Gas Law
3 formulasWaves & Optics
Waves, sound, light, lenses and interference.
Interference and Diffraction
3 formulasLenses and Mirrors
3 formulasReflection and Refraction of Light
4 formulasSound Waves
2 formulasThe Doppler Effect
3 formulasModern Physics
Quantum mechanics, relativity, atoms and beyond.