Opticks : or, A treatise of the reflections, refractions, inflections and colours of light (1730)
Newton, Isaac, Sir, 1642-1727 · London : Printed for William Innys at the West-End of St. Paul's · leaf 208
THE SECOND BOOJ^ O F OPTICKS PART II. Remarks tipo-n the foregoing Obfervatio?ts, A V I N G given my Obfervationsof thefe Colours, before I makelife of them to unfold the Caufesof the Colours of natural Bodies,it is convenient that by the fim-pleft of them,fuch asare the ad, 3d,4th, 9th, I2thj… … 20O ; O P T I C K S. plain the more compounded. And firft to fhewnow the Colours in the fourth and eighteenthObiervations are produced, let there be taken inany Right Line from the Point Y, [in Ffg.6.] theLengths YA, YB, YC, YD, YE, YF, YG, YH,in proportion to one another, as the Cube-RoOtsof the…
Optics
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