Excerpt from Coupling of Optic and Acoustic Modes of Vibration in Crystals In the present case of a diatomic lattice9 the secular equation is a 2 x 2 determinant9 having two solutions (qqeps) for each of the EN values of k lying in the first Brillouin zone; these two solutions correspond to s a opt09 acousto The problem of solving (6) to give the functional form of w(???9s) and of the frs= quency spectrum of the lattice vibrations was first discussed by Born and von Karman???xj??? for any specific case it generally leads ...
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Excerpt from Coupling of Optic and Acoustic Modes of Vibration in Crystals In the present case of a diatomic lattice9 the secular equation is a 2 x 2 determinant9 having two solutions (qqeps) for each of the EN values of k lying in the first Brillouin zone; these two solutions correspond to s a opt09 acousto The problem of solving (6) to give the functional form of w(???9s) and of the frs= quency spectrum of the lattice vibrations was first discussed by Born and von Karman???xj??? for any specific case it generally leads to very lengthy calculationso Here we shall use the simplest possible approximaticn9 of the debyeceinsteinfl form (cfo Figo l) About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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