Waves and Vibrations in Soils

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Author :
Publisher : Iuss Press
ISBN 13 :
Total Pages : 510 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Waves and Vibrations in Soils by : Jean-François Semblat

Download or read book Waves and Vibrations in Soils written by Jean-François Semblat and published by Iuss Press. This book was released on 2009 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Flexoelectricity in Liquid Crystals

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Publisher : World Scientific
ISBN 13 : 1848167997
Total Pages : 299 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka

Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

Inequalities in Mechanics and Physics

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Publisher : Springer Science & Business Media
ISBN 13 : 3642661653
Total Pages : 415 pages
Book Rating : 4.6/5 (426 download)

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Book Synopsis Inequalities in Mechanics and Physics by : G. Duvant

Download or read book Inequalities in Mechanics and Physics written by G. Duvant and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. We begin by giving a simple example of a partial differential inequality that occurs in an elementary physics problem. We consider a fluid with pressure u(x, t) at the point x at the instant t that 3 occupies a region Q oflR bounded by a membrane r of negligible thickness that, however, is semi-permeable, i. e., a membrane that permits the fluid to enter Q freely but that prevents all outflow of fluid. One can prove then (cf. the details in Chapter 1, Section 2.2.1) that au (aZu azu aZu) (1) in Q, t>o, -a - du = g du = -a z + -a z + -a z t Xl X X3 z l g a given function, with boundary conditions in the form of inequalities u(X,t»o => au(x,t)/an=O, XEr, (2) u(x,t)=o => au(x,t)/an?:O, XEr, to which is added the initial condition (3) u(x,O)=uo(x). We note that conditions (2) are non linear; they imply that, at each fixed instant t, there exist on r two regions r~ and n where u(x, t) =0 and au (x, t)/an = 0, respectively. These regions are not prescribed; thus we deal with a "free boundary" problem.

Color Television Receivers

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Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Color Television Receivers by :

Download or read book Color Television Receivers written by and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report to the President on investigation no. 332-95 under section 332 of the Tariff Act of 1930, as amended.

Mechanics of Generalized Continua

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Publisher : Springer Science & Business Media
ISBN 13 : 1441956956
Total Pages : 337 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis Mechanics of Generalized Continua by : Gérard A. Maugin

Download or read book Mechanics of Generalized Continua written by Gérard A. Maugin and published by Springer Science & Business Media. This book was released on 2010-03-24 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: In their 1909 publication Théorie des corps déformables, Eugène and François Cosserat made a historic contribution to materials science by establishing the fundamental principles of the mechanics of generalized continua. The chapters collected in this volume showcase the many areas of continuum mechanics that grew out of the foundational work of the Cosserat brothers. The included contributions provide a detailed survey of the most recent theoretical developments in the field of generalized continuum mechanics and can serve as a useful reference for graduate students and researchers in mechanical engineering, materials science, applied physics and applied mathematics.

Mathematical Methods for Wave Phenomena

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Publisher : Academic Press
ISBN 13 : 0080916953
Total Pages : 360 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Mathematical Methods for Wave Phenomena by : Norman Bleistein

Download or read book Mathematical Methods for Wave Phenomena written by Norman Bleistein and published by Academic Press. This book was released on 2012-12-02 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer Science and Applied Mathematics: Mathematical Methods for Wave Phenomena focuses on the methods of applied mathematics, including equations, wave fronts, boundary value problems, and scattering problems. The publication initially ponders on first-order partial differential equations, Dirac delta function, Fourier transforms, asymptotics, and second-order partial differential equations. Discussions focus on prototype second-order equations, asymptotic expansions, asymptotic expansions of Fourier integrals with monotonic phase, method of stationary phase, propagation of wave fronts, and variable index of refraction. The text then examines wave equation in one space dimension, as well as initial boundary value problems, characteristics for the wave equation in one space dimension, and asymptotic solution of the Klein-Gordon equation. The manuscript offers information on wave equation in two and three dimensions and Helmholtz equation and other elliptic equations. Topics include energy integral, domain of dependence, and uniqueness, scattering problems, Green's functions, and problems in unbounded domains and the Sommerfeld radiation condition. The asymptotic techniques for direct scattering problems and the inverse methods for reflector imaging are also elaborated. The text is a dependable reference for computer science experts and mathematicians pursuing studies on the mathematical methods of wave phenomena.

Phononic Crystals

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Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110387913
Total Pages : 494 pages
Book Rating : 4.1/5 (13 download)

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Book Synopsis Phononic Crystals by : Vincent Laude

Download or read book Phononic Crystals written by Vincent Laude and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-09-14 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phononic crystals are artificial periodic structures that can alter efficiently the flow of sound, acoustic waves, or elastic waves. They were introduced about twenty years ago and have gained increasing interest since then, both because of their amazing physical properties and because of their potential applications. The topic of phononic crystals stands as the cross-road of physics (condensed matter physics, wave propagation in inhomogeneous and periodic media) and engineering (acoustics, ultrasonics, mechanical engineering, electrical engineering). Phononic crystals cover a wide range of scales, from meter-size periodic structures for sound in air to nanometer-size structures for information processing or thermal phonon control in integrated circuits. Phononic crystals have a definite relation with the topic of photonic crystals in optics. The marriage of phononic and photonic crystals also provides a promising structural basis for enhanced sound and light interaction. As the topic is getting popular, it is nowadays presented and discussed at various international conferences. After the first ten years during which the topic has remained mainly theoretical with a few proof-of-concept demonstrations in the literature, the evolution has been towards applications, instrumentation, and novel designs. The physical explanations for various effects are now well understood and efficient numerical methods and analysis tools have been developed. The book contains a comprehensive set of finite element model (FEM) scripts for solving basic phononic crystal problems. The scripts are short, easy to read, and efficient, allowing the reader to generate for him(her)self band structures for 2D and 3D phononic crystals, to compute Bloch waves, waveguide and cavity modes, and more.

Organic Solid-State Lasers

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Publisher : Springer
ISBN 13 : 3642367054
Total Pages : 179 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Organic Solid-State Lasers by : Sébastien Forget

Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.

Physical Properties of Amorphous Materials

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Publisher : Springer Science & Business Media
ISBN 13 : 1489922601
Total Pages : 448 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Physical Properties of Amorphous Materials by : David Adler

Download or read book Physical Properties of Amorphous Materials written by David Adler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute for Amorphous Studies was founded in 1982 as the international center for the investigation of amorphous mate rials. It has since played an important role in promoting the und er standing of disordered matter in general. An Institute lecture series on "Fundamentals of Amorphous Materials and Devices" was held during 1982-83 with distinguished speakers from universities and industry. These events were free and open to the public ,and were attended by many representatives of the scientific community. The lectures themselves were highly successful inasmuch as they provided not only formal instruction but also an opportunity for vigorous and stimulating debate. That last element could not be captured within the pages of a book I but the lectures concentrated on the latest advances in the field I which is why their essential contents are he re reproduced in collective form. Together they constitute an interdisciplinary status report of the field. The speakers brought many different viewpoints and a variety of back ground experiences io bear on the problems involved I but though language and conventions vary I the essential unity of the concerns is very clear I as indeed are the ultimate benefits of the many-sided approach.

Nonlinear Optical Materials

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Publisher : Springer Science & Business Media
ISBN 13 : 9780387985817
Total Pages : 270 pages
Book Rating : 4.9/5 (858 download)

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Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney

Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.

Laser: 50 Years Of Discoveries

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Publisher : World Scientific
ISBN 13 : 9814612421
Total Pages : 185 pages
Book Rating : 4.8/5 (146 download)

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Book Synopsis Laser: 50 Years Of Discoveries by : Fabien Bretenaker

Download or read book Laser: 50 Years Of Discoveries written by Fabien Bretenaker and published by World Scientific. This book was released on 2014-10-27 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides an overview of the principle and applications of lasers enriched with numerous illustrations.Being over fifty years old, lasers continue to amaze us. Their performance characteristics are constantly reaching new limits, and the scope of their applications continues to expand. Yet, it took years of effort by teams of physicists to transform the fundamental notions of Einstein into the first experimental beam of laser light. And history is still going on as fundamental research is now triggered by its remarkable properties.This book addresses every aspects of laser light, from its fundamental principles to its industrial applications, at a level particularly suited for high school teachers, students, and anybody curious about science and technology.

Phononics

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Publisher : Elsevier
ISBN 13 : 9780128099483
Total Pages : 0 pages
Book Rating : 4.0/5 (994 download)

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Book Synopsis Phononics by : Leonard Dobrzynski

Download or read book Phononics written by Leonard Dobrzynski and published by Elsevier. This book was released on 2017-08-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phononics: Interface Transmission Tutorial Book Series provides an investigation of modern systems that includes a discrete matrix description. Classical continuous systems relying on the use of differential equations are recalled, showing that they generally have a specific limit on their corresponding modern matrix formulation. A detailed description of the mathematical languages that enables readers to find the composite system linear transmission properties is provided in the appendix. The physical model is described with exacting detail, and the bibliography is built to cite-in chronological order-all the scientists that have contributed over many years. Each volume is written with the aim of providing an up-to-date and concise summary of the present knowledge of interface transmission science, thus fostering the exchange of ideas among scientists interested in different aspects of interface transmission. The book serves as an introduction to advanced graduate students, researchers, and scientists with little study on the subject, and is also useful to help keep specialists informed on general progress in the field.

Etude de l'impact d'une pointe SNOM sur les propriétés des modes optiques d'une cavité à base de cristaux photoniques

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Publisher :
ISBN 13 :
Total Pages : 147 pages
Book Rating : 4.:/5 (69 download)

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Book Synopsis Etude de l'impact d'une pointe SNOM sur les propriétés des modes optiques d'une cavité à base de cristaux photoniques by : Gaëlle Le Gac

Download or read book Etude de l'impact d'une pointe SNOM sur les propriétés des modes optiques d'une cavité à base de cristaux photoniques written by Gaëlle Le Gac and published by . This book was released on 2010 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les cristaux photoniques (CP) nous fournissent un moyen sans précédent de contrôler et de confiner les photons. En particulier, les cristaux photoniques membranaires (CP-2D) (confinement vertical par réflexion totale interne), et l’effet de bande interdite photonique (confinement dans le plan), jouent un rôle très important en nanophotonique. En introduisant des défauts dans le cristal (omission d’un ou de plusieurs motifs), il est possible de générer des modes optiques très localisés, possédant un faible volume modal et un grand facteur de qualité. Coupler un émetteur unique à ce type de mode peut être alors utile pour exalter ou inhiber sa dynamique. L’efficacité du couplage dépend à la fois de l’accord en longueur d’onde entre l’émetteur et le mode optique ainsi que de leur recouvrement spatial, c’est pourquoi le contrôle du couplage entre l’émetteur et le mode localisé doit être optimal. Il est donc crucial de connaître le profil du mode dans la cavité à une échelle suffisamment petite. Jusqu’à présent, le SNOM s’est révélé un outil de caractérisation particulièrement bien adapté à l’observation directe du champ dans des structures nanophotoniques. En effet, il permet d’accéder aux parties évanescentes des modes, livrant ainsi des informations locales, inaccessibles par des mesures classiques en champ lointain. Cependant, le potentiel des structures à base de CP-2D pour développer de nouveaux composants photoniques serait considérablement accru si leurs propriétés optiques pouvaient être modifiées après fabrication. En particulier, pour les structures actives, la capacité à accorder de manière réversible une cavité à l’emission ou à l’absorption d’une source est de grand intérêt. Dans cette étude, l’idée est donc d’utiliser la sonde d’un SNOM dans le but de perturber la résonnance (longueur d’onde, facteur de qualité) d’un mode. Dans ce travail, Nous concevons et optimisons une cavité linéaire dans laquelle sept trous ont été omis (CL7). Nous étudions théoriquement les propriétés de la cavité et particulièrement un mode présentant un bon facteur de qualité. Ensuite, l’interaction de pointes champ proche avec les modes de la CL7 et en particulier l’effet du matériau de la pointe sur l’émission en longueur d’onde et les pertes induites relatives sont étudiés. Dans ce but, une pointe est introduite dans des simulations FDTD-3D, soit avec l’indice de la silice (1.44), soit avec l’indice du silicium (3.4). Ensuite, l’effet de la forme de la pointe sur les cartographies est étudié, et particulièrement l’influence de la polarisabilité et de la section efficace. Les cavités CL7 sont fabriquées et caractérisées par un dispositif d’optique réfractive et par un microscope optique de champ proche. Le mode fondamental, présentant un effet laser, est utilisé pour étudier l’interaction ave la pointe champ proche. Des caractérisations SNOM avec une pointe en silice et une pointe hybride silice/silicium sont réalisées sur la cavité CL7 et nous démontrons que la pointe en silice recouverte de silicium provoque un décalage en longueur d’onde de l’ordre de quelques nanomètres, de 5 à 10 fois supérieur que la largeur intrinsèque du pic. La pointe en silice induitdes décalages en longueur d’onde de l’ordre du dixième de nanomètre, qui n’est pas détecté par notre montage expérimental. Nous démontrons également l’importance de la forme de la pointe lors de l’observation directe et locale de la distribution du champ avec le SNOM. Nous montrons qu’une pointe isotrope de bas indice peut être utilisée comme un outil de caractérisation passive car la cartographie champ proche donne une bonne approximation du mode tel qu’il existe dans la structure sans présence de la pointe. A l’inverse, une pointe anisotrope donne une information partielle car elle ne convertie le champ que dans la direction du petit axe.

Le champ proche optique

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Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9782287597206
Total Pages : 356 pages
Book Rating : 4.5/5 (972 download)

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Book Synopsis Le champ proche optique by : Daniel Courjon

Download or read book Le champ proche optique written by Daniel Courjon and published by Springer Science & Business Media. This book was released on 2001-04-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce livre présente l'éat de l'art de l'ensemble des connaissances sur le champ proche optique. Ecrit par les meilleurs spécialistes de ce nouveau domaine de la physique, il couvre avec la même rigueur aussi bien les nouvelles modélisations des champs électromagnétiques que les tous derniers exemples d'application. Comme de nombreux domaines de recherche en émergence, le champ proche optique nécessitera encore de gros efforts tant théoriques qu'expérimentaux. Mais l'abondance des données accumulées par les auteurs de ce livre en fait une base précieuse pour les utilisateurs présents et futurs du champ proche optique, dans des domaines aussi variés que la microbiologie, les nanotechnologies, la nanoconnectique, les objets communicants, les télécommunications optiques... Un des objectifs réussi de ce livre est de fournir aux lecteurs avertis ou non, les connaissances nécessaires pour accéder à ces nouveaux domaines applicatifs encore si peu explorés.

Matériaux artificiels : ingénierie de dispersion des micro-ondes à l'optique

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Author :
Publisher : Lavoisier
ISBN 13 : 2746281376
Total Pages : 386 pages
Book Rating : 4.7/5 (462 download)

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Book Synopsis Matériaux artificiels : ingénierie de dispersion des micro-ondes à l'optique by : VANBESIEN Olivier

Download or read book Matériaux artificiels : ingénierie de dispersion des micro-ondes à l'optique written by VANBESIEN Olivier and published by Lavoisier. This book was released on 2012-04-16 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce livre propose une synthèse des recherches - des concepts jusqu'aux applications - sur les matériaux artificiels, incluant les cristaux photoniques et les métamatériaux. Il expose les enjeux de performance et les défis de fabrication (jusqu'à l'échelle du nanomètre) pour l'exploitation des effets d'ultra-réfraction ou de réfraction négative induits par l'ingénierie généralisée ou localisée de la dispersion sur l'ensemble du spectre électromagnétique (des micro-ondes à l'optique en passant par le térahertz et l'infrarouge). Didactique, Matériaux artificiels analyse les possibilités de l'optique de transformation tels que les mirages optiques, les lentilles parfaites, les tapis magiques et les capes d'invisibilité. Présentés comme potentiels précurseurs de nouveaux systèmes de contrôle de la propagation des ondes et/ou d'imagerie pour les domaines des télécommunications, de la biologie ou de la médecine, ils permettent d'identifier les principaux verrous théoriques et technologiques actuels.

Electromagnétisme

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Publisher : Dunod
ISBN 13 : 2100768506
Total Pages : 384 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Electromagnétisme by : Patrice Tchofo Dinda

Download or read book Electromagnétisme written by Patrice Tchofo Dinda and published by Dunod. This book was released on 2017-09-13 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce manuel d’électromagnétisme est consacré à la propagation des ondes électromagnétiques. Il traite un éventail complet de supports de propagation, incluant notamment les milieux isotropes et anisotropes, ainsi que toutes les grandes classes de supports physiques existants, allant de l’espace libre jusqu’aux guides d’ondes (lignes bifilaires, câble coaxial, fibre optique) en passant par les diélectriques, plasmas, et milieux conducteurs. Chaque chapitre est structuré en trois parties. Le cours expose toutes les définitions et démonstrations nécessaires et est ponctué d’encarts pour approfondir certaines notions, apporter un éclairage historique, présenter une application concrète, détailler un protocole expérimental... Le résumé du cours rassemble les éléments essentiels et suffisants pour la résolution des exercices et problèmes. Enfin, chaque chapitre se termine par une série d’exercices, de difficulté croissante, et tous corrigés. Les corrigés, détaillés, incluent l’énoncé des lois physiques et le cheminement du raisonnement jusqu’au résultat final.