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Waves & Oscillations · Simulation
Standing Waves and Resonance: Why Everything Has a Natural Frequency
Standing waves and resonance, explained interactively — build string harmonics, paint Chladni patterns with sound, and shake buildings in an earthquake sim.
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- Waves & OscillationsStanding Waves and Resonance: Why Everything Has a Natural Frequency
- OpticsMirror Formula Calculator: Concave and Convex Mirror Ray Diagrams
- OpticsLens Formula Calculator: Ray Diagrams and Chromatic Aberration
- AstrophysicsKepler's Laws of Planetary Motion Explained: Ellipses, Equal Areas and the Harmony of the Worlds
- OpticsSnell's Law Calculator: Refraction and Total Internal Reflection
- ThermodynamicsHeat Loss Calculator: Conduction, Convection and Radiation Explained
- AstrophysicsEscape Velocity Calculator: From Leaving Earth to Falling Into a Black Hole
- MechanicsVelocity-Time Graph Calculator: Equations of Motion (SUVAT) Explained
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Featured articles
Mechanics · Centripetal Force Simulation and Calculator: Interactive Circular Motion
Optics · Snell's Law Calculator: Refraction and Total Internal Reflection
Waves & Oscillations · Signal Recovery with FFT
Optics · Interference and Diffraction of Light: Why Waves Make Patterns
Modern Physics · Half-Life Calculator and Radioactive Decay Simulator
Chaos · Lorenz Attractor
Mathematics & Statistics · Mandelbrot Set
Mechanics · Projectile Motion Simulator
The FFT algorithm made real-time audio processing possible, and it runs billions of times per second in your phone.
From the Signal Recovery with FFT post