these materials are transparent to light it is not a property of the human vision system that light goes trough N2
These materials are transparent to some light. They absorb a lot of infrared and ultraviolet. The human vision system can see the light that isn't absorbed and as a result is abundant in our environment.
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These materials are transparent to some light. They absorb a lot of infrared and ultraviolet. The human vision system can see the light that isn't absorbed and as a result is abundant in our environment.