134. If the Moon was a reflecting sphere we would not be able to see the sunlight reflected off it

"Furthermore the Moon itself cannot physically be both a spherical body and a reflector of the Sun’s light.  Reflectors must be flat or concave for light rays to have any angle of incidence; If a reflector’s surface is convex then every ray of light points in a direct line with the radius perpendicular to the surface resulting in no reflection."

This is a flawed argument because Dubay does not understand how reflections operate

The reflection described in the proof is called specular reflection.  This type of reflection takes place with mirror like surfaces.  The Moon’s surface is not mirror like.  If you look through a telescope you can see that the Moon’s surface is not regular, but what is actually important is the roughness at the microscopic level determined by the material (Moon dust and rock) itself.

The roughness of the material at the microscopic level results in the majority of the light reflected being diffuse rather than specular.

This means that only some of the light gets reflected back at the same angle of incident.  The majority is reflected at other angles, i.e. scattered.  This results in light reaching our eyes that has been reflected from all over the surface of the Moon.


https://en.wikipedia.org/wiki/Diffuse_reflection



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