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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 .. (1878)

Babbitt, Edwin D. (Edwin Dwight), 1828-1905 · New York, Babbitt & Co. · leaf 416

An illustration from 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 .., 1878, leaf 416
ctrical rays wemust bring the rays to a lumin- Fig. 174- A Convex Lens. ^ pQint Qn ^ object . jf WQ wish the electrical rays also, we must bring the lens a littlenearer to the object, while for the trans-violet rays it must bestill nearer. The more convex the surfaces of the lens are, theshorter… … III. The Reflection of Light. I. This will be treated of here in only its salient points, andwith a desire to correct some misconceptions that scientists havefallen into on the subject. All reflection of light is caused bychemical repulsion. But here the critic may meet me with suchwords as these…

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