Opticks Book by Isaac Newton(37)

[ 37 ]

firſt Prifms be either white and circular, or co-

loured and rectangular once it falls on the third. Exper. 6. within the middle of 2 skinny Boards I created spherical holes a 3rd a part of an in. in diameter, and within the Window - ſhut a way broader hole being created to let into my dark- ned Chamber an oversized Beam of the Sun's Light; I placed a Priſm behind the border that beam to refract it towards the oppoſite Wall, and cloſe behind the Priſm I fastened one in every of the Boards, in ſuch manner that the center of the refracted lightweight would possibly would possibly through the opening created in it, and therefore the and therefore the intercepted by the Board. Then at the diſtance of concerning twelve Feet from the within the I fastened different|the opposite} Board in ſuch man- ner that the center of the refracted lightweight that came through the opening within the firſt Board and got hold of got hold of Wall would possibly would possibly through the opening during this other Board, and therefore the and therefore the intercepted by the Board would possibly paint upon it the colored Spectrum of the Sun And cloſe behind this Board I fastened another Priſm to re- fract the sunshine that came through the opening. Then I came came to the firſt Priſm, and by turning it ſlowly to and fro concerning its Axis, I cauſed the Image that got hold of got hold of Board to maneuver up and down upon that Board, that all its elements would possibly would possibly would possibly through the opening therein Board and come across come across behind it. And within the unit of time, I noted the places on the oppoſite Wall to that that lightweight once its Refraction within the within the within the and by the distinction of the places I found that the sunshine that being moſt refracted within the

firſt

D 3

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Comments

Opticks isaac newton book Page 32-33

[ 32 ] [in Fig. 15.) repreſent the Circle that all the Opticks book moſt refrangible Rays propagated from the whole Diſque of the Sun, would illuminate and paint upon the oppoſite Wall if they were a- lone; EL the Circle that all the leaſt refran- gible Rays would in like manner illuminate and paint if they were alone; BH, CJ,DK, the Circles that that several intermediate ſorts of Rays would fuccefſively paint upon the Wall, if they were fingly propagated from the Sun in ſucceſſive order, the reſt being forever in- tercepted; and conceive that there square measure alternative intermediate Circles while not range, that countless alternative intermediate forts of Rays would ſucceſſively paint upon the Wall if the Sun ſhould ſucceſſively emit each each apart. And ſeeing the Sun emits all theſe forts directly, they muſt all at once illuminate and paint in- countable equal Circles, of all that, being in line with their degrees of Refrangibility placed so as during a continual Series, that

Page 8-9 isaac newton book

[ 8 ] a lot of when the celebrity manner, if ACBD (in Fig. three ] reprefent a Glafs ſpherically gibbous on each each (uſually referred to as a Lens, ſuch as could be a could be a, or Spectacle glaſs, or AN Object glaſs of a Teleſcope) and or not it's needed to understand however lightweight falling upon it from any lucid purpose Q ſhall be refracted, let Q M repreſent a Ray falling upon any purpose M of its firſt ſpherical Surface ACB, and by building a Perpendicular to the Glaſs at the purpose M, notice the firſt re- fracted Ray M N by the Proportion of the Sines seventeen to eleven. Let that Ray in going out of the Glaſs be incident upon N, and so notice the ſecond refracted Ray weight unit by the Proporti- on of the Sines eleven to seventeen. And when the ſame manner might the Refraction be found once the Lens is gibbous on one ſide and Plane or Con- cave on the opposite, or bowl-shaped on each each. A X. VI. Homogeneal Rays that ensue feveral Points of any Object, and fall sh

Carl Linnaeus

When all the thoughts unit regarding one issue and in addition the person loses interest in various things, the melancholy begins. In science the principles of truth have to be compelled to be confirmed by observation. When the non secular light-weight is targeted within the brain, everything else have to be compelled to be sinking within the dark. ¿Qué tiene Diamond State extraño que yo no vea a Dios si no puedo ver siquiera al Yo que vive nut mí?

Mr Koen

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