The sun light we observe always behaves like local light, as does the moon, showing a single hot spot reflection as you can replicate, and as photos by high altitude balloon confirm. The light from the sun is not as a uniform, parallel light wave, which is what would come from a sun that is 93 million miles away, and the moon, to a much lessor degree.
You need to define 'local light'.
But parallel light waves from the sun, hitting the moon, should result in a shadow that is 2,200 miles across. The size of the moon. This is because parallel light will not wrap and create a soft outer and darker center shadow.
You seem to be confusing laser light and wavelengths with parallel light. Start by defining local light please.
You need to define 'local light'.
You seem to be confusing laser light and wavelengths with parallel light. Start by defining local light please.