Fivefold Symmetry
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Fivefold Symmetry
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Author : Istv n Hargittai
language : en
Publisher: World Scientific
Release Date : 1992
Fivefold Symmetry written by Istv n Hargittai and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Science categories.
Fivefold symmetry is common in flowers, fruits, molecules, logos, and buildings, but it is a forbidden symmetry in the world of crystals. A few years ago, the so-called quasicrystals were discovered displaying fivefold symmetry, and it caused a minirevolution in crystallography. There has been increased awareness of fivefold symmetry in all domains of human interest ever since. The present book brings together authors and ideas on a common theme from mathematics, the sciences, design, and anthropology to history, literature, and the arts. Its 29 chapters are an offering by scientists and humanists from 13 countries to a broad readership of professionals and laypersons about fivefold symmetry and the areas that are being bridged by this unique concept.
Fivefold Symmetry
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Author : Istvan Hargittai
language : en
Publisher: World Scientific
Release Date : 1992-03-24
Fivefold Symmetry written by Istvan Hargittai and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-03-24 with Science categories.
Fivefold symmetry is common in flowers, fruits, molecules, logos, and buildings, but it is a forbidden symmetry in the world of crystals. A few years ago, the so-called quasicrystals were discovered displaying fivefold symmetry, and it caused a minirevolution in crystallography. There has been increased awareness of fivefold symmetry in all domains of human interest ever since. The present book brings together authors and ideas on a common theme from mathematics, the sciences, design, and anthropology to history, literature, and the arts. Its 29 chapters are an offering by scientists and humanists from 13 countries to a broad readership of professionals and laypersons about fivefold symmetry and the areas that are being bridged by this unique concept.
Symmetry Through The Eyes Of A Chemist
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Author : Magdolna Hargittai
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-02-28
Symmetry Through The Eyes Of A Chemist written by Magdolna Hargittai 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 2009-02-28 with Science categories.
It is gratifying to launch the third edition of our book. Its coming to life testi?es about the task it has ful?lled in the service of the com- nity of chemical research and learning. As we noted in the Prefaces to the ?rst and second editions, our book surveys chemistry from the point of view of symmetry. We present many examples from ch- istry as well as from other ?elds to emphasize the unifying nature of the symmetry concept. Our aim has been to provide aesthetic pl- sure in addition to learning experience. In our ?rst Preface we paid tribute to two books in particular from which we learned a great deal; they have in?uenced signi?cantly our approach to the subject matter of our book. They are Weyl’s classic, Symmetry, and Shubnikov and Koptsik’s Symmetry in Science and Art. The structure of our book has not changed. Following the Int- duction (Chapter 1), Chapter 2 presents the simplest symmetries using chemical and non-chemical examples. Molecular geometry is discussed in Chapter 3. The next four chapters present gro- theoretical methods (Chapter 4) and, based on them, discussions of molecular vibrations (Chapter 5), electronic structures (Chapter 6), and chemical reactions (Chapter 7). For the last two chapters we return to a qualitative treatment and introduce space-group sym- tries (Chapter 8), concluding with crystal structures (Chapter 9). For the third edition we have further revised and streamlined our text and renewed the illustrative material.
Solid State Chemistry And Its Applications
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Author : Mr. Rohit Manglik
language : en
Publisher: EduGorilla Publication
Release Date : 2024-12-24
Solid State Chemistry And Its Applications written by Mr. Rohit Manglik and has been published by EduGorilla Publication this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-12-24 with Science categories.
Covers crystal structures, bonding in solids, defects, conductivity, and material properties with applications in electronics, metallurgy, and material science.
The Golden Ratio And Fibonacci Numbers
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Author : Richard A Dunlap
language : en
Publisher: World Scientific
Release Date : 1997-12-16
The Golden Ratio And Fibonacci Numbers written by Richard A Dunlap and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-12-16 with Mathematics categories.
In this invaluable book, the basic mathematical properties of the golden ratio and its occurrence in the dimensions of two- and three-dimensional figures with fivefold symmetry are discussed. In addition, the generation of the Fibonacci series and generalized Fibonacci series and their relationship to the golden ratio are presented. These concepts are applied to algorithms for searching and function minimization. The Fibonacci sequence is viewed as a one-dimensional aperiodic, lattice and these ideas are extended to two- and three-dimensional Penrose tilings and the concept of incommensurate projections. The structural properties of aperiodic crystals and the growth of certain biological organisms are described in terms of Fibonacci sequences.
Designing The Molecular World
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Author : Philip Ball
language : en
Publisher: Princeton University Press
Release Date : 1996-12
Designing The Molecular World written by Philip Ball and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-12 with Science categories.
Molecular chemistry.
The Plant Viruses
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Author : R.I.B. Francki
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
The Plant Viruses written by R.I.B. Francki 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 2013-06-29 with Science categories.
It has been known for a long time that the majority of plant viruses contain RNA and in the past decade and a half it has been realized that many have genomes consisting of three molecules of single-stranded RNA with positive polarity. Among these are viruses belonging to four groups recognized by the International Committee for Virus Taxonomy: the Bromovirus and Cucumovirus groups whose genomes are encapsi dated in small icosahedral particles or the Ilarvirus and alfalfa mosaic virus groups with spheroidal or bacilliform particles. In addition to their tripartite genomes, these viruses share a number of other properties and it has been proposed that they should perhaps be grouped in a single virus family for which the name Tricornaviridae has been suggested, the tri indicating the tripartite nature of the genome, the co emphasizing the cooperation of the three genome parts required to initiate infection, and the rna indicating that the genome is composed of RNA. Viruses of this "family" are less uniform in their biological proper ties. A number of them are widespread, causing very destructive plant diseases. Viruses such as those of cucumber mosaic and alfalfa mosaic have very extensive host ranges and are responsible for serious crop losses in many parts of the world. Others such as prunus necrotic ringspot or prune dwarf viruses are more restricted in their host ranges but never theless infect important perennial hosts such as stone fruits and reduce productivity considerably.
Numerical Geometry Grid Generation And Scientific Computing
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Author : Vladimir A. Garanzha
language : en
Publisher: Springer Nature
Release Date : 2021-09-25
Numerical Geometry Grid Generation And Scientific Computing written by Vladimir A. Garanzha and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-25 with Mathematics categories.
The focus of these conference proceedings is on research, development, and applications in the fields of numerical geometry, scientific computing and numerical simulation, particularly in mesh generation and related problems. In addition, this year’s special focus is on Delaunay triangulations and their applications, celebrating the 130th birthday of Boris Delaunay. In terms of content, the book strikes a balance between engineering algorithms and mathematical foundations. It presents an overview of recent advances in numerical geometry, grid generation and adaptation in terms of mathematical foundations, algorithm and software development and applications. The specific topics covered include: quasi-conformal and quasi-isometric mappings, hyperelastic deformations, multidimensional generalisations of the equidistribution principle, discrete differential geometry, spatial and metric encodings, Voronoi-Delaunay theory for tilings and partitions, duality in mathematical programming and numerical geometry, mesh-based optimisation and optimal control methods. Further aspects examined include iterative solvers for variational problems and algorithm and software development. The applications of the methods discussed are multidisciplinary and include problems from mathematics, physics, biology, chemistry, material science, and engineering.
States Of Matter States Of Mind
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Author : Allan F.M. Barton
language : en
Publisher: CRC Press
Release Date : 2021-08-29
States Of Matter States Of Mind written by Allan F.M. Barton and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-29 with Science categories.
States of Matter, States of Mind is an easy-to-read introduction to the way the physical world is put together and stays together. The book presents the fundamental ideas and particles of the makeup of the universe to enable understanding of matter and why it behaves in the way it does. Written in an engaging manner, the book explains some of the intricate details and grand schemes of life and the universe, by making analogies with common everyday examples. For example, the recipe for a cake tells us nothing of how good the cake tastes, but is a model of the food, and a scientific model is no closer to the reality of the materials than a recipe is to the mouth-watering flavor of the cake. Illustrated with helpful cartoons, this book provides a vast knowledge of atoms and atmospheres. The first several chapters introduce terms and fundamental ideas while later chapters deal successively with particles and systems, from the electron to the universe as a system. Each new idea introduced builds upon the last. A user-friendly bibliography provides references for further reading.
Quasicrystals Proceedings Of The 5th International Conference
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Author : C Janot
language : en
Publisher: World Scientific
Release Date : 1995-12-22
Quasicrystals Proceedings Of The 5th International Conference written by C Janot and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-12-22 with categories.
These proceedings cover topics related to Quasicrystals, including tiling descriptions, high dimensional crystallography, structure studies, metallurgy and phase diagrams, and also properties with special emphasis on dynamics, electronic and mechanical behaviour. For the first time, materials made of metals only that behave as insulators are presented. For the first time also application focused research and processing of Quasicrystalline materials are addressed.Invited speakers: J Friedel, D Shechtman, M Baake, D Basov, C Berger, M de Boissieu, T Fujiwara, S Khanna, Y Meyer, S J Poon, C Sire, H Trebin, A P Tsai, M Widdom, M Wollgarten, Z Zhang.