 | Robert Boyle - 1725 - 768 pages
...To this purpofe Sir Ifaac Newton fpeaks thus : " When a man in the dark, " fays he, greffes cither corner of his eye " with his finger, and turns his eye away 41 from his finger, he wiJl fee я circle of " colours like thofe in the feather of a '* peacock's... | |
 | Isaac Newton - 1730 - 403 pages
...and of the Chameleon,) do not meet, if I am rightly inform'd. ^u. 1 6. When a Man in the dark prefies either corner of his Eye with his Finger, and turns his Eye away from his Finger, he will fee a Circle of Colours like thofe in the Feather of a Peacock's Tail. If the Eye and the Finger remain... | |
 | Regnault (Père, Noël) - 1731 - 492 pages
...obferve a Sort of Stars in the Dark, The * Mem. de 1'Acad. 1700. p. 289. f When a Man in the dark prefles either Corner of his Eye with his Finger, and turns his Eye away from his Finger, he will fee a Circle of Colours like thofe in the Feather of a Peacock's Tail. If the Eye and the Finger remain... | |
 | 1786 - 680 pages
...lame " time perpetually changing .. . long as " they exift. " 3. When any one in the dark ** preflei either corner of his eye with " his finger, and turns his eye away " from his finger, he will fee a circle of " colours like thole in a peacock's tail : " and a (udden fl.-.lh of light is excited.... | |
 | Erasmus Darwin - 1800 - 676 pages
...are at the fame time perpetually changing as long as they exiit, 3. When any one in the dark preffes either corner of his eye with, his finger, and turns his eye away from his finger, he will fee a circle of colours like thofe in a peacock's tail : aud a fucUien Haiti of light is excited in... | |
 | Erasmus Darwin - 1801 - 602 pages
...are at the fame time perpetually changing as long as they exift. 3. When any one in the dark prefles either corner of his eye with his finger, and turns his eye away from his finger, he will fee a circle of colours like thofe in a peacock's tail : and a fudden flam of light is excited in the... | |
 | David Hartley - 1801 - 544 pages
...the appearance mentioned by Sir Ifaac Newton, Opt. §>u. 16. viz. " When ." a man in the dark prefles either corner of his " eye with his finger, and turns his eye away from " his finger, he will fee a circle of colours like thofe " in the feather of a peacock's tail. And this " appearance continues... | |
 | Erasmus Darwin - 1803 - 622 pages
...the fame time perpetually changing as long as they exift. 3. When any one in the dark prefles cither corner of his eye with his finger, and turns his eye away from his finger, he will fee. a circle of colours like thofe in a peacock's tail : and a fudden SEcT. XL. i.4- OCULAR SPECTRA.... | |
 | Erasmus Darwin - 1818 - 616 pages
...perpetually changing as long as they exist. 3. When any one in the dark presses either corner of biseye with his finger, and turns his eye away from his finger, he will see a circle of colours like those in a peacock's tail: and a sudden flash of light is excited in the eye by a stroke on it (Newton's Opt.... | |
 | Henry Coddington - 1825 - 254 pages
...propagated along the solid fibres of the nerves into the brain, cause the sense of seeing." And again, " When a man in the dark presses either corner of his...finger, he will see a circle of colours like those in a peacock's tail. Do not these colours arise from such motions excited in the bottom of the eye by... | |
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When a Man in the dark presses either corner of his Eye with his Finger, and turns his Eye away from his Finger, he will see a Circle of Colours like those in the Feather of a Peacock's Tail. 
