Waves & Oscillations
Wave phenomena, Fourier analysis, and oscillatory motion
Signal Recovery with FFT
7 Apr 2026
Build a noisy signal from multiple frequencies, then use the Fast Fourier Transform to recover the original — see denoising in action.
wavesfouriersignal processingFFTdenoising
The Doppler Effect
26 Mar 2026
Why an ambulance siren changes pitch — visualize wavefront compression and spectral shifts.
wavesdopplerred shiftblue shiftacoustics
Fourier Synthesis
20 Feb 2026
Build complex waveforms from simple sine waves — square, sawtooth, and triangle.
wavesfouriersignal processing
Wave Packets
10 Feb 2026
Explore quantum wave packets and the uncertainty principle.
quantum mechanicswavesuncertainty principle
Lissajous Figures
20 Jan 2026
Beautiful parametric curves from perpendicular harmonic oscillations.
wavesoscillationslissajous