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Several experiments performed in recent years are claimed to have demonstrated superluminal wave motion. A major aim of this book is to elucidate what is really meant and implied by superluminal wave motion - a question that has caused much confusion until now. Using modern mathematical tools, the authors demonstrate that none of the results imply any violation of the principle of relativity. They also clarify the meaning of several types of superluminal velocity that appear in quantum theory; for example, the Hegerfeldt paradox and formalism is given in sufficient detail that students will also be able to follow the arguments. It is proved that all linear relativistic wave equations of mathematical physics (Maxwell, Dirac, Weyl, the homogeneous wave equation and the Klein-Gordon equation) possess arbitrary velocities solutions, which are undistorted progressive waves. ... Read more

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This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more

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The question of when and how the basic concepts that characterize modern science arose in Western Europe has long been central to the history of science. This book examines the transition from Renaissance engineering and philosophy of nature to classical mechanics oriented on the central concept of velocity. Descartes, Galileo, and other protagonists of what the authors call ... Read more

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This book covers the specific aspects of mechanics and control theory that are applied in terrestrial locomotion systems. In addition to the theoretical basics and applications, exercises are provided. The solutions can be found at "www.springer.com/978-3-540-88840-6" as well as on

- video files regarding prototypes of wheeled and worm-like locomotion systems;

- e-learning software on the mechanical background;

- MAPLE and MATLAB programs for the dynamic simulation of locomotion systems.

Customer Reviews (1)

A must for Physics Majors and others.
A must for Physics Majors and others. Lots of material to supplement any course in Mechanics.
Buy a copy and you won't regret it. ... Read more

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An illustrated overview of perpetualmotion machines and their inventors. The deceptively simple task of making a mechanism which would turn forever has fascinated many famous men and physicists throughout the centuries. In fact, the basic tenets of engineering grew from the failures of these perpetual motion machine designers. And, despite the naivete and even the blatant trickery of many inventors, there still exist a handful of mechanisms which defy explanation: * a vast canvascovered wheel which turned by itself was erected in the Tower of London * another wheel turned endlessly in Germany and was discussed by philosophers and scientists throughout Europe, including Sir Isaac Newton ... Read more

Customer Reviews (3)

An impressively documented history of the discovery and utilization of perpetual motion machines
Perpetual Motion: The History Of An Obsession by Arthur W.J.G. Ord-Hume is an impressively documented history of the discovery and utilization of perpetual motion machines. As for most scientists and inventors, perpetual motion had become the potential discovery that would enable the generation of a much greater technology, for some it had become an obsession, and still today there may remain a number of mysterious processes in which perpetual motion seems without explanation. Discover the most intriguing history of perpetual motion in Perpetual Motion which is very highly recommended to all readers especially to those students of general sciences and aspiring mechanics and invention, as well as non-specialist general readers with an interest in alternative science.

Perpetually readable...
Best overall account of Redheffer's Perpetual Motion claim published to date.

Affectionate Look at the Pursuit of an Impossible Dream
Mr. Ord-Hume, an engineer himself, wrote this book after being entreated to aid with a television show on the subject of Perpetual Motion in Britain; he had already kept a file on perpetual motion machines as a curiosity he kept running into while studying the history of machines, and evidently was inspired by these two separate things to write an entire book on the subject.His book reads as more than a history of individual inventions and their creators than an engineering treatise, which puts not only the machines but the whole pursuit of perpetual motion into perspective; originally conceived as a way to simply save work, then as the holy grail of early engineering, and finally as a way for con men to bilk investors out of their money, the author catalogues the efforts of very interesting and often brilliant men.He explains how the machines were supposed to work, why they won't, and even occasionally gets inside the head of the inventors.He never makes fun of them however, and even credits them with inadvertantly furthering science and physics by building ever-more complex machines that won't work due to various physical principles that are discovered.Many brilliant men who could have been famous contributors to science wasted their lives and fortunes (and occasionally their sanity) pursuing the idea of free energy, no to avail.There was one exception...a clockmaker named Cox who built a perpetual clock powered by a barometer.But is it true perpetual motion?You decide.

My only quibble with the book is that his qauint style of writing does become more than a bit convoluted at times in trying to make his point, and that he does not go into enough detail at times explaining why a machine does not work, apparently assuming (and probably correctly) that the reader will not be able to follow the physics involved.However, the book is very entertaining and thought-provoking to anyone interested in mechanics.Some of the concepts are truly brilliant, especially considering how long ago they were conceived; except for the annoying fact that they wouldn't work.No matter how big a skeptic, the reader will probably find himself (or herself) doodling their very own machine on a piece of paper...and convincing themselves it could work. An esoteric and highly entertaining work for mechanics enthusiasts. ... Read more

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This book contains a collection of 11 research and review papers devoted to the topic of fluid-structure interaction.The subject matter is divided into chapters covering a wide spectrum of recognized areas of research, such as: wall bounded turbulence; quasi 2-D turbulence; canopy turbulence; large eddy simulation; lake hydrodynamics; hydraulic hysteresis; liquid impacts; flow induced vibrations; sloshing flows; transient pipe flow and air entrainment in dropshaft.The purpose of each chapter is to summarize the main results obtained by the individualresearch unit through a year-long activity on a specific issue of the above list. The main feature of the book is to bring state of the art research on fluid structure interaction to the attention of the broad international community.This book is primarily aimed at fluid mechanics scientists, but it will also be of value to postgraduate students and practitioners in the field of fluid structure interaction. ... Read more

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The discovery of coherent structures in turbulence has fostered the hope that the study of vortices will lead to models and an understanding of turbulent flow, thereby solving or at least making less mysterious one of the great unresolved problems of classical physics. Vortex dynamics is a natural paradigm for the field of chaotic motion and modern dynamical system theory.The emphasis in this monograph is on the classical theory of inviscid incompressible fluids containing finite regions of vorticity. The effects of viscosity, compressiblity, inhomogeneity, and stratification are enormously important in many fields of application, from hypersonic flight to global environmental fluid mechanics. However, this volume focuses on those aspects of fluid motion that are primarily controlled by the vorticity and are such that the effects of the other fluid properties are secondary. This book will be of interest to students of fluid mechanics, turbulence, and vortex methods as well as to applied mathematicians and engineers. ... Read more

Customer Reviews (2)

Vortex Dynamics
This book is full of interesting and valuable information about Vortices and for a very good price.

Disappointing
Some maths are incomplete making it hard to go through. Especially, the author likes to state the obvious and not give details on some more interesting maths. Next, I was expecting much from the chapters "viscosity effects" and "vortex rings"...
No nice experimental pictures, just some sketches. Book is not too expensive, that's the only positive thing I can think about... ... Read more

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This book represents the third part of a larger work dedicated to the structural synthesis of parallel robots. The originality of this work resides in the fact that it combines the new formulae for mobility, connectivity, redundancy and over constraints, and the evolutionary morphology in a unified approach of structural synthesis giving interesting innovative solutions for parallel robotic manipulators. This is the first book of robotics presenting solutions of coupled, decoupled, uncoupled, fully-isotropic and maximally regular parallel robotic manipulators with planar motion of the moving platform systematically generated by using the structural synthesis approach proposed in Part 1. Non-redundant/redundant, over constrained/isostatic solutions with simple/complex limbs actuated by linear/rotary actuators with/without idle mobilities are proposed. Many solutions are presented here for the first time in the literature. The author had to make a difficult and challenging choice between protecting these solutions through patents, and releasing them directly into the public domain. The second option was adopted by publishing them in various recent scientific publications and mainly in this book. In this way, the author hopes to contribute to a rapid and widespread implementation of these solutions in future industrial products. ... Read more

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*Provides material that will drill mechanical and civil engineers in problem-solving techniques

*Covers the core areas: Statics, Dynamics, and Strength of Materials *Includes hundreds of worked-out problems and practice problems ... Read more

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Some forces, such as the collision that sends a baseball flying away from a bat, are easy to observe; other forces, such as the one that gives a rocket its thrust, are more difficult to perceive. But all objects in motion obey laws, whether the object is a Ferris wheel, a tsunami in the ocean, or a person walking down the street. All objects in motion have energy, and storing up energy and converting it into motion is a common way of getting around. Doing this without using up all the world's energy or polluting the environment is a process in which an understanding of physics is essential. "Force and Motion" looks at forces and motions and explores how physics, through simple and general concepts, affects the way people live and how the world around them works. Each chapter in this book focuses on a single aspect of force and motion. But, as readers will learn, each aspect branches out, covering a wide range of phenomena and relating them in ways unimaginable without the science of physics. ... Read more

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High Quality Content by WIKIPEDIA articles! The Lagrangian, L, of a dynamical system is a function that summarizes the dynamics of the system. It is named after Joseph Louis Lagrange. The concept of a Lagrangian was originally introduced in a reformulation of classical mechanics known as Lagrangian mechanics. In classical mechanics, the Lagrangian is defined as the kinetic energy, T, of the system minus its potential energy, V. Under conditions that are given in Lagrangian mechanics, if the Lagrangian of a system is known, then the equations of motion of the system may be obtained by a direct substitution of the expression for the Lagrangian into the Euler?Lagrange equation, a particular family of partial differential equations. ... Read more

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SMP 16-19 Mechanics 2 matches the Mechanics 2 module of the new AQA Advanced Subsidiary and Advanced Level Mathematics specification A. Adapted from SMP's successful 16-19 Mathematics course, it uses a highly motivating approach which develops ability and confidence in mathematics and its applications. It continues the SMP's tradition of accessibility, attractive presentation and motivating activities, all of which ease the transition from GCSE to A level mathematics. Each section of every chapter is followed by an exercise; answers are given at the back of the book. ... Read more

Customer Reviews (1)

Early Elementary science winner
I homeschool my 8 and 5 yr old daughters.We got this book from the library and found it to be just right to accommodate both of them.The supplies to do the "investigation" are TRULY things you have around the house and simple enough for even the youngest one to catch on to the concept.However, there's enough explanation for the older one to extrapolate to other ideas.Each "lesson" is just two pages with good graphics and takes about 20 minutes of your time.I really don't like teaching science but we had good luck with this book for all of us. ... Read more

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An airplane soars through the sky. A wind gust blows through the leaves. Objects are in motion all around you. But what makes objects move? And what are some different ways that objects move? Read this book to find out! Learn all about matter, energy, and forces in the Exploring Physical Science series--part of the Lightning Bolt Books(tm) collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books(tm) bring nonfiction topics to life! ... Read more

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Examines the topics of motion, force, gravity, and friction. ... Read more