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Sir isaac newton opticks6/24/2023 ![]() ![]() Refrangibility of the Rays of Light, is their Disposition to be refracted or turned out of their Way in passing out of one transparent Body or Medium into another. ![]() The least Light or part of Light, which may be stopp'd alone without the rest of the Light, or propagated alone, or do or suffer any thing alone, which the rest of the Light doth not or suffers not, I call a Ray of Light. ![]() For that part of Light which is stopp'd cannot be the same with that which is let pass. For it is manifest that Light consists of Parts, both Successive and Contemporary because in the same place you may stop that which comes one moment, and let pass that which comes presently after and in the same time you may stop it in any one place, and let it pass in any other. My Design in this Book is not to explain the Properties of Light by Hypotheses, but to propose and prove them by Reason and Experiments: In order to which I shall premise the following Definitions and Axioms.īy the Rays of Light I understand its least Parts, and those as well Successive in the same Lines, as Contemporary in several Lines. ![]()
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