Characteristic Frequencies From Infrared And Elastic Data

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New Concepts In The Physics Of Solids

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Author : Johannes N. Plendl
language : en
Publisher:
Release Date : 1966

New Concepts In The Physics Of Solids written by Johannes N. Plendl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Chemical bonds categories.

This work treats spectral and atomistic concepts derived from an analytical study of more than one hundred solids. The study deals with such characteristics as infrared spectra, specific heat, bulk-modulus, change of compressibility with pressure, lattice anharmonicity, exponent of repulsion, lattice cohesive energy, zero-point energy, hardness, and valence. Characterizing the lattice vibrations - that is, the infrared spectrum through one single frequency (the 'centro-frequency', defined by the center of gravity of the entire spectrum) - it is shown that an identical frequency may be derived as a mechanical analogy from the average velocity of sound determined, in this case, from the cubic compressibility. A thermodynamical analogy exists in the Debye frequency from specific heat. The 'centro-frequency' has proven to be the key to a successful formulation of the nonlinearity or anharmonicity of the attractive and repulsive forces in solids. The importance of anharmonicity for the understanding of the basic properties of solids from an atomistic point of view is shown through various applications. (Author).

Government Wide Index To Federal Research Development Reports

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Author :
language : en
Publisher:
Release Date : 1966-02

Government Wide Index To Federal Research Development Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966-02 with Government publications categories.

Technical Abstract Bulletin

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Author :
language : en
Publisher:
Release Date :

Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Science categories.

Report On Research At Afcrl

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Author : Air Force Cambridge Research Laboratories (U.S.)
language : en
Publisher:
Release Date : 1965

Report On Research At Afcrl written by Air Force Cambridge Research Laboratories (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Geophysics categories.

The Control Of Electromagnetic Scattering By Impedance Loading

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Author : J. K. Schindler
language : en
Publisher:
Release Date : 1965

The Control Of Electromagnetic Scattering By Impedance Loading written by J. K. Schindler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electromagnetism categories.

A Method For Estimating Atmospheric Noise Amplitudes And Phase Errors In Quenched High Q Receiving Circuits

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Author : E. A. Lewis
language : en
Publisher:
Release Date : 1965

A Method For Estimating Atmospheric Noise Amplitudes And Phase Errors In Quenched High Q Receiving Circuits written by E. A. Lewis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Atmospheric electricity categories.

Very narrow-band quenched filters used for studying VLF radio signals differ from conventional narrow-band circuits in that both signal and atmospheric noise impulses cause only brief quasi-sinusoidal outputs instead of a prolonged ringing. The random overlapping of these short noise and signal bursts can cause errors in phase measurements. It is shown that the distribution of phase errors can be calculated from the amplitude distribution of the output noise envelope. The properties of the phase distribution are discussed in detail, the computation required in the general case is illustrated by means of a numerical example. A simple 'time-sequential' method for experimentally obtaining typical amplitude distributions is suggested. (Author).

Characteristic Frequencies From Infrared And Elastic Data

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Author : Johannes N. Plendl
language : en
Publisher:
Release Date : 1965

Characteristic Frequencies From Infrared And Elastic Data written by Johannes N. Plendl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Science categories.

The Nonlinear Interaction Of A Radio Frequency Wave With An Inhomogeneous Plasma Slab

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Author : Robert J. Papa
language : en
Publisher:
Release Date : 1965

The Nonlinear Interaction Of A Radio Frequency Wave With An Inhomogeneous Plasma Slab written by Robert J. Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electromagnetic waves categories.

Far Infrared Properties Of Solids

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Author : S. Mitra
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Far Infrared Properties Of Solids written by S. Mitra and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

This book provides an account of modern aspects relating far infrared radiation to properties of solids; it encompasses both theoretical and experimental considerations. Written at the gradu ate level, it attempts a threefold purpose; an indication of the breadth of the subject, an in-depth examination of important areas, and reference material to complement a text for a course. The treatment and organization of material here is compatible with a preceding volume of this series on "Optical Properties of Solids." Chapters 1-6 present material concerned principally with experimental considerations necessary to the carrying out of meas urements in the far infrared spectral region. They also serve to provide considerable introductory material for the remaining chap ters which deal with various areas that offer theoretical treat ments utilizing and understanding far infrared properties of solids. Several lectures presented at the Institute could not be in cluded in this book for two reasons: (i) Final versions of the lecture notes suitable for publication never arrived from several lecturers; (ii) Some materials were deliberately left out fro~ this book as they were also presented at an earlier NATO Institute and form part of a preceding volume edited by us in this series. In particular, it is recommended that Chapters 14 and 15, viz., in frared and Raman spectra due to lattice vibrations by S. S. Mitra and impurity induced lattice absorption by L. Genzel in "Optical Properties of Solids'· be read concurrently with the present volume.

Characteristic Frequencies From Infrared And Elastic Data

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Author : Johannes N. Plendl
language : en
Publisher:
Release Date : 1965

Characteristic Frequencies From Infrared And Elastic Data written by Johannes N. Plendl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Dielectrics categories.