“Do not the Rays which differ in Refrangibility differ also in Flexibility; and are they not by their different inflexions separated from one another, so as after separation to make the Colours in the three Fringes…? And after what manner are they inflected to make those Fringes?”

— Isaac Newton, book Opticks, or a Treatise of the Reflections, Refractions, Inflections and Colours of Light

Query 2
Opticks (1704)

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Isaac Newton171

British physicist and mathematician and founder of modern c… 1643–1727

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“Do not several sorts of Rays make Vibrations of several bignesses, which according to their bigness excite Sensations of several Colours, much after the manner that the Vibrations of the Air, according to their several bignesses excite Sensations of several Sounds? And particularly do not the most refrangible Rays excite the shortest Vibrations for making a Sensation of deep violet, the least refrangible the largest form making a Sensation of deep red, and several intermediate sorts of Rays, Vibrations of several intermediate bignesses to make Sensations of several intemediate Colours?”

Isaac Newton book Opticks, or a Treatise of the Reflections, Refractions, Inflections and Colours of Light

Query 13
Opticks (1704)

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Other Inquisitions (1952)

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