> then is there anything self-existing in Nature which could be used to (or does in actuality) implement a Fourier Transform? The lens in the human eye is cont

> then is there anything self-existing in Nature which could be used to (or does in actuality) implement a Fourier Transform? The lens in the human eye is continuously doing Fourier transforms via the lens: https://en.wikipedia.org/wiki/Fourier_optics#Fourier_transforming_property_of_lenses https://en.wikipedia.org/wiki/Fourier_optics#Fourier_transfo...