"Sound" is just as much a "preception" as is "color." - Both are mental constructs usually produced by external waves
(repeative oscillations, one characteristic of which is a wavelength). Both can be experienced without any external stimulation, although "ringing in the ear" is more common than color (Except when intentionally produced from viewing white surface in white light after having fatigued the neurons which cause the perception of color in V4 of the visual cortex. - I.e. by stare at well illuminated red spot for a few minutes then look at white wall, etc. and perceive green spot. Color need not be associated with any particular frequency of light.)
The common rainbow is the result of two internal reflections within the drops of water. A less common rainbow, with larger arc and colors in reversed order, can often be seen when the common one is strong. It has three internal reflections and two surface refractions.
I do not normally describe the change of direction of light rays produced by refraction as "scattering" but reserve this term for external, irregular reflection.
(repeative oscillations, one characteristic of which is a wavelength). Both can be experienced without any external stimulation, although "ringing in the ear" is more common than color (Except when intentionally produced from viewing white surface in white light after having fatigued the neurons which cause the perception of color in V4 of the visual cortex. - I.e. by stare at well illuminated red spot for a few minutes then look at white wall, etc. and perceive green spot. Color need not be associated with any particular frequency of light.)
The common rainbow is the result of two internal reflections within the drops of water. A less common rainbow, with larger arc and colors in reversed order, can often be seen when the common one is strong. It has three internal reflections and two surface refractions.
I do not normally describe the change of direction of light rays produced by refraction as "scattering" but reserve this term for external, irregular reflection.
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