Sine Wave Sum
Fourier's idea, made visible: any repeating wave — even a sharp sawtooth or square — is a sum of plain sine waves at multiples of one frequency. Add the harmonics one at a time and watch the smooth sines pile up into the corner.
Fourier's idea, made visible: any repeating wave — even a sharp sawtooth or square — is a sum of plain sine waves at multiples of one frequency. Add the harmonics one at a time and watch the smooth sines pile up into the corner.