Opticks : or, A treatise of the reflections, refractions, inflections and colours of light . contrary at the Ends of the Arcs they retaind theirOrder unchanged. I have fometimes fo layd one Objed-glafsupon the other, that to the naked Eye theyhave all over feemd uniformly white, withoutthe leaft Appearance of any of the colourdRings ; and yet by viewing them through aPrifm, great Multitudes of thofe Rings havedifcoverd themfelves. And in like mannerPlates of Miifcovy Glafs, and Bubbles of Glafsblown at a Lamp-Furnace, which were not fotlijn as to exhibit any Colours to the naked Eye,

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Opticks : or, A treatise of the reflections, refractions, inflections and colours of light . contrary at the Ends of the Arcs they retaind theirOrder unchanged. I have fometimes fo layd one Objed-glafsupon the other, that to the naked Eye theyhave all over feemd uniformly white, withoutthe leaft Appearance of any of the colourdRings ; and yet by viewing them through aPrifm, great Multitudes of thofe Rings havedifcoverd themfelves. And in like mannerPlates of Miifcovy Glafs, and Bubbles of Glafsblown at a Lamp-Furnace, which were not fotlijn as to exhibit any Colours to the naked Eye,have through the Prifm exhibited a great Va^riety of them ranged irregularly up and down in O 3 the 198 O P T I C K S. the Form of Waves. And fo Bubbles of Water,before they began to exhibit their Colours to thenaked Eye of aBy-ftander, have appeared throughfl Prlfrn, girded about with many parallel andhorizontal Rings ^ to produce v^hich Effed:, itwas neceffary to hpld the Prifm parallel, orvery nearly parallel to the Horizon, and todifpofe it {q th^t the Rays might be T H»E

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Keywords: ., bookauthornewtonisaacsir16421727, bookdecade1, booksubjectoptics