Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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ceiver ſeem more opacous at the very
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moment of the ruſhing out of the Air:
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For conſidering that the whiteneſs, whoſe
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cauſe we enquire of, did but ſometimes ap
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pear, it ſeem'd not impoſſible but that at
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ſuch times the Air in the Receiver might
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abound with Particles, capable of re
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flecting the Light in the manner requiſite
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to exhibit a white colour, by their being
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put into a certain unuſual Motion. </
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<
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>As
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may be in ſome meaſure illuſtrated by
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this, That the new motion of the freſhly
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mention'd Fumes, made the inſide of the
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Receiver appear ſomewhat darker then
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before: And partly by the nature of our
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formerly mention'd ſmoking Liquor,
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whoſe parts though they ſeem'd tranſpa
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rent whil'ſt they compoſ'd a Liquor, yet
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when the ſame Corpuſcles, upon the un
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ſtopping of the Glaſs, were put into a
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new motion, and diſpoſ'd after a new
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manner, they did opacate that part of the
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Air they mov'd in, and exhibited a great
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er whiteneſs then that which ſometimes
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appears in our Pneumatical Veſſel. </
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<
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ſhould we content our ſelves with this ſin
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gle Inſtance, to manifeſt, That little Bo
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dies, which being rang'd after one manner,
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are Diaphanous and Colourleſs, may, by </
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