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Eye grow blandish until it return to a due Figure i
For thort-ſighted Men fee remote Objects beſt
in Old Age, and so they're accounted
to have to own to own.
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Isaac Newton |
A X. VIII.
AN Object ſeen by Reflexion or Refraction,
appears therein place from wherefrom the Rays af.
ter their laſt Reflexion or Refraction diverge in
falling on the Spectator's Eye.
If the article A[in Fig. 9.] be ſeen by Reflexion
of a Looking-glaſs m n, it hall seem, not in its correct place A, however behind the Glaſs at a, from wherefrom any Rays AB, AC, AD, that ensue one and also the fame purpose of the article, do when their Reflexion created within the Points B, C, D, di- verge in going from the Glaſs to E, F, G, wherever they're incident on the Spectator's Eyes.
For theſe Rays do build the celebrity image within the bottom of the Eyes as if they'd return from the article extremely placed at a while not the inter- poſition of the trying trying and every one Vifion is formed consistent with the place and ſhape of that image.
In like manner the article D [in Fig. 2.] ſeen
through a Priſm, seems not in its correct place D, however is thence tranſlated to ſome different place d ſituated within the within the Ray F G drawn backward from F to d.
And ſo the article Q [in Fig.10.] ſeen through
the Lens AB, seems at the place from wherefrom the Rays diverge in pafling from the Lens to the attention. currently it's to be noted, that the Image of
the
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