K Kyle S Guest Mar 18, 2009 #1 Does anyone know why human eyes have developed to see only in what we call the "visible spectrum" of light? Why didn't we develop to see in ultraviolet light or thermal energy? Other animals can see in these ways.
Does anyone know why human eyes have developed to see only in what we call the "visible spectrum" of light? Why didn't we develop to see in ultraviolet light or thermal energy? Other animals can see in these ways.
