pay attention anon.
by quoting from 'wikipedia', you demonstrate nothing anon. take a close look at the observable facts.
before you get into jargon, observe the very simple experiment (pic related).
the cardboard close to the bulb creates wider-spaced light-pockets than the hole-spacings within the cardboard. As the light source is moved far away the hole spacings within the cardboard and the lightpockets are equally aligned.
This situation is analogous to the clouds (cardboard) and the sun (bulb).