Quote:
Originally Posted by SEE
Refraction of light through a gas and liquids is caused by a change of speed. We see a 'rainbow' effect because each wavelength (in the spectrum of light) the speed is affected differently and splits.
However, If all the wavelengths that make the spectrum of light were to bend at the same speed then refraction will not occur. This is probably why atmospheric interference was discounted.
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check out this refraction in which theres no cromatic aberration
cromatic aberration or rainbow efect is just a minor part of refraction
the main problem with refraction is it moves stars, it has to be taken into acount with celestial navigation and it grows as stars get close to the horizon
in other words the rainbow effect caused by the atmosphere refracting starlight is neglible compared with the change of position of the star caused by that refraction