A wave exhibits diffraction when it encounters an obstacle that bends the wave or when it spreads after emerging from an opening. Diffraction effects are more pronounced when the size of the obstacle or opening is comparable to the wavelength of the wave.
(maybe physics stackExchange isn't the proper place to ask this question?)
I was wondering if we (our vision perception) notice this phenomenon? Light diffraction around an edge/object is clearly visible to the human eye (e.g. edgy/fuzzy shadow) but when we are looking at the edge/object directly I can not make clear to myself if I/we notice this phenomenon or not?
Shouldn't the perception of this phenomenon be clearly noticed by us?