The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications .. . and then pass this orange ray through another prismbehind the screen, will it be decomposed into the two colors yel-low and red ? No ; it will remain exactly as it was before, thusshowing that it is a primitive and indivisible ray. This is not * De Radiis Visits et Lucis, 1611. DIVISION OF COLORS. 59 saying
The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications .. . and then pass this orange ray through another prismbehind the screen, will it be decomposed into the two colors yel-low and red ? No ; it will remain exactly as it was before, thusshowing that it is a primitive and indivisible ray. This is not * De Radiis Visits et Lucis, 1611. DIVISION OF COLORS. 59 saying that orange cannot be made by means of red and yellowpigments, but that it is not so constituted in the sunlight. 3. Sound and Color compared: There is no harm in dividingthe colors into seven divisions on the Newtonian plan. In factit is rather a good division and harmonizes with the seven notes ofthe musical scale, C, D, E, F, G, A, B ; C answering to red, D toorange, etc. As C is at the bottom of the musical scale and madewith the coarsest waves of air, so is red at the bottom of the Chro-matic scale and made with the coarsest waves of luminous the musical note B requires 45 vibrations of air every timethe note C at the lower end of the scale requires 24, or but little. Fig. 129. Decomposition of Light by the Prism. over half as many, so does extreme violet require about 800 tril-lions * of vibrations of ether in a second, while extreme red re-quires only about 450 trillions, which also are but little morethan half as many. When one musical octave is finished an- * In speaking of numbers I adopt the French method of enumeration of threefigures to a period, usually adopted in America, instead of the more cumbrousEnglish method of six figures to a period, so that when I say 800 trillions I mean800,000,000,000,000. What we would call one billion the English would designateby the more complicated expression otic thousand millions, etc. 6o HARMONIC LAWS OF THE UNIVERSE.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectcolor, booksubjectpho
