This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: ...e varies while e' remains constant, while in the case of the movable wire both e and e' vary, the one increasing and the other diminishing; the difference between e and e' consequently increases twice as rapidly with a moving wire as it does with a fixed wire and moving wedge. Let 2 a be the distance between two dark ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: ...e varies while e' remains constant, while in the case of the movable wire both e and e' vary, the one increasing and the other diminishing; the difference between e and e' consequently increases twice as rapidly with a moving wire as it does with a fixed wire and moving wedge. Let 2 a be the distance between two dark bands as measured by the wire, and 2 b the distance through which the wedge is moved in order to produce the same shift--from the foregoing b = 2 a. The retardation 8 at distance x (measured by moving wedge) x from the central band is =2' smce movmg the wedge a distance b changes the retardation by We have now the neces sary data for the study of an elliptical vibration, and will first determine the phase-difference between the two components. The components into which the incident vibration is resolved at the quartz surface will differ in phase by an amount a--/3, if we represent them by x = A cos(u + ), y = Bcos(uxt +/8). Transmission through the plate alters this phase-difference by an amount 8= (e--e') (/.--n0), and there will be a system of lines along which the total phase-difference a--/3 + 8 will be multiples of It and the transmitted light plane polarized. We first adjust the wedges so that with plane-polarized light to start with the central dark band is bisected by the cross wire. The phase-difference at this point is zero. Substituting elliptically polarized light we find the central band shifted to a point, so situated that the phase-difference between the components of the elliptical vibration is compensated exactly by 8, the phase-difference resulting from transmission through the plate. The quartz wedge is now to be moved by the micrometer screw until the central band is again bisected by the wire. If this distance is deno...
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Add this copy of Physical Optics to cart. $25.72, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Physical Optics to cart. $35.17, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
