fundamental component of an a Fourier series, central component
perioodilise suuruse Fourier rea sinusoidaalne komponent, mille sagedus on sama kui suurusel endal, sinusoidal component of the Fourier series of a periodic quantity having the frequency of the quantity itself, perioodilise suuruse Fourier-i rea 1. järgu komponent (harmoonik), component of order 1 of the Fourier series of a periodic quantity
