Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 296
ill give for the interfering rays, in case ofreflected rings, a difference of route expressed by accounted for: 2*+ ~ 2 Difference ofroute for reflectedrings; and for the transmitted, Fig. 75. 2 t + x. To ascertain the value of £, at thedifferent rings, call d, the diameter2 PII, of one of them, as… … Same fortransmitted rings. To find r, at thedifferent rings; 288 NATURAL PHILOSOPHY. Equation fromthe figure; Then, for very small arcs, we have (4)* 2 r and Anotherequation; , (4) ^ = -—; 2r Value of t; whence < = „ _ v = { _ | Same for firstbright ring; In this way Newton found the thickness…
Mechanics · Acoustics · Optics
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-330-37.webp)
