On a Beam of Light

On a Beam of Light PDF

Author: Jennifer Berne

Publisher: Chronicle Books

Published: 2013-04-23

Total Pages: 58

ISBN-13: 1452113092

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A boy rides a bicycle down a dusty road. But in his mind, he envisions himself traveling at a speed beyond imagining, on a beam of light. This brilliant mind will one day offer up some of the most revolutionary ideas ever conceived. From a boy endlessly fascinated by the wonders around him, Albert Einstein ultimately grows into a man of genius recognized the world over for profoundly illuminating our understanding of the universe. Jennifer Berne and Vladimir Radunsky invite the reader to travel along with Einstein on a journey full of curiosity, laughter, and scientific discovery. Parents and children alike will appreciate this moving story of the powerful difference imagination can make in any life.

Seeing the Unseen

Seeing the Unseen PDF

Author: Joe Beam

Publisher: Simon and Schuster

Published: 2010-05-08

Total Pages: 486

ISBN-13: 1439122725

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Spiritual warfare is real, and your faith is at stake. Based on Biblical principles, Seeing the Unseen helps you fight back against the enemy. In today’s world, Satan seems to be everywhere, and he seems to have the advantage. But the enemy is not of this world, and the war is in the spiritual world. Satan is trying to attack you and destroy your faith, and the only way to defeat him is to fight back. In this newly revised and updated bestseller, Joe Beam reveal Satan's powerful weaponry—his lies, deceptions, and manipulations—and unmasks his strategy to destroy your life and those you care for. This book will show you his plans and tactics, and teach you where he is likely to strike next and how to fight him. Based on a dedicated study of God’s word, this book is filled with stories of tragedy and triumph and will give you the tools you need to defeat the enemy.

Laser Beam Shaping Applications

Laser Beam Shaping Applications PDF

Author: Fred M. Dickey

Publisher: CRC Press

Published: 2005-07-26

Total Pages: 370

ISBN-13: 1420028065

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The practice of shaping the irradiance profile of laser beams goes back more than three decades, and the applications of beam shaping are as diverse as they are numerous. However, until Dickey and Holswade's groundbreaking and highly popular Laser Beam Shaping: Theory and Techniques was published, there was no single, detailed treatment available on the underlying theory and basic techniques of beam shaping. Building on the foundations of this previous work, these esteemed editors have teamed with recognized expert David L. Shealy to produce the first in-depth account of beam shaping applications and design. Laser Beam Shaping Applications details the important features of beam shaping and exposes the subtleties of the theory and techniques that are best demonstrated through proven applications. In chapters contributed by prominent, active leaders in their respective specialties, the book discusses applications in lithography, laser printing, optical data storage, stable isotope separation, adaptive mirrors, and spatially dispersive lasers. The contributors share major insights, knowledge, and experience, reveal the advantages of the technologies, and include extensive references to the literature. The book concludes with a summary of beam shaping theory and techniques as well as the history of the field. Providing practical expertise, Laser Beam Shaping Applications is an extremely helpful guide to improving current laser processes, optimizing application-specific technologies, and advancing future development in the field.

Concrete Beams with Openings

Concrete Beams with Openings PDF

Author: M. A. Mansur

Publisher: CRC Press

Published: 1999-01-29

Total Pages: 240

ISBN-13: 9780849374357

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This book compiles state-of-the-art information on the behavior, analysis, and design of concrete beams containing transverse openings. Discussions include the need, effects, and classification of openings as well as the general requirements for fulfilling design pure bending, combined bending, and shear - illustrated with numerical examples torsion alone or in combination with bending and shear large rectangular openings as well as opening size and location on beam behavior methods for analyzing ultimate strength and serviceability requirements effects of torsion in beams large openings in continuous beams and their effects on possible redistribution of internal forces as well as guidelines and procedures for the design of such beams effect of prestressing on the serviceability and strength of beams with web openings design against cracking at openings and ultimate loads Concrete Beams with Openings serves as an invaluable source of information for designers and practicing engineers, especially useful since little or no provision or guidelines are currently available in most building codes.

Laser Beam Micro-milling of Micro-channels in Aerospace Alloys

Laser Beam Micro-milling of Micro-channels in Aerospace Alloys PDF

Author: Saied Muhammed Hassan Darwish

Publisher: Springer

Published: 2017-01-31

Total Pages: 342

ISBN-13: 9811036020

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This volume is greatly helpful to micro-machining and laser engineers as it offers obliging guidelines about the micro-channel fabrications through Nd:YAG laser beam micro-milling. The book also demonstrates how the laser beam micro-milling behaves when operating under wet conditions (under water), and explores what are the pros and cons of this hybrid technique. From the predictive mathematical models, the readers can easily estimate the resulting micro-channel size against the desired laser parametric combinations. The book considers micro-channels in three highly important research materials commonly used in aerospace industry: titanium alloy Ti-6Al-4V, nickel alloy Inconel 718 and aluminum alloy AA 2024. Therefore, the book is highly practicable in the fields of micro-channel heat exchangers, micro-channel aerospace turbine blades, micro-channel heat pipes, micro-coolers and micro-channel pulsating heat plates. These are frequently used in various industries such as aerospace, automotive, biomedical and micro-electronics.

The Theory of the Optical Wedge Beam Splitter

The Theory of the Optical Wedge Beam Splitter PDF

Author: Yardley Beers

Publisher:

Published: 1974

Total Pages: 36

ISBN-13:

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An optical wedge beam splitter consists of a prism of transparent material with a very small apex angle, usually about one degree. If a pencil beam of radiation is incident upon it, a portion enters the material and undergoes a series of reflections at the surfaces. At each reflection a refracted beam emerges from the material. This paper gives the basic theory for computing the ratio of the intensity of the incident beam to the intensity of any selected emerging beam and also for computing the direction of the emerging beam, assuming that the wedge angle, index of refraction, angle of incidence, and number of reflections are known. The paper also gives the results of numerical calculations based upon this theory for sample situations which are of interest. (Modified author abstract).

Finite Element Analysis of Beam-to-Beam Contact

Finite Element Analysis of Beam-to-Beam Contact PDF

Author: Przemyslaw Litewka

Publisher: Springer Science & Business Media

Published: 2010-04-24

Total Pages: 175

ISBN-13: 3642129404

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Phenomena occurring during a contact of two bodies are encountered in everyday life. In reality almost every type of motion is related to frictional contact between a moving body and a ground. Moreover, modeling of simple and more complex processes as nailing, cutting, vacuum pressing, movement of machines and their elements, rolling or, finally, a numerical simulation of car crash tests, requires taking contact into account. Therefore, its analysis has been a subject of many research efforts for a long time now. However, it is author’s opinion that there are relatively few efforts related to contact between structural elements, like beams, plates or shells. The purpose of this work is to fill this gap. It concerns the beam-to-beam contact as a specific case of the 3D solids contact. A numerical formulation of frictional contact for beams with two shapes of cross-section is derived. Further, a couple of effective methods for modeling of smooth curves representing beam axes are presented. A part of the book is also devoted to analyze some aspects of thermo-electro-mechanical coupling in contact of thermal and electric conductors. Analyses in every chapter are illustrated with numerical examples showing the performance of derived contact finite elements.

Racing the Beam

Racing the Beam PDF

Author: Nick Montfort

Publisher: MIT Press

Published: 2020-02-25

Total Pages: 193

ISBN-13: 0262539764

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A study of the relationship between platform and creative expression in the Atari VCS, the gaming system for popular games like Pac-Man and Star Wars: The Empire Strikes Back. The Atari Video Computer System dominated the home video game market so completely that “Atari” became the generic term for a video game console. The Atari VCS was affordable and offered the flexibility of changeable cartridges. Nearly a thousand of these were created, the most significant of which established new techniques, mechanics, and even entire genres. This book offers a detailed and accessible study of this influential video game console from both computational and cultural perspectives. Studies of digital media have rarely investigated platforms—the systems underlying computing. This book, the first in a series of Platform Studies, does so, developing a critical approach that examines the relationship between platforms and creative expression. Nick Montfort and Ian Bogost discuss the Atari VCS itself and examine in detail six game cartridges: Combat, Adventure, Pac-Man, Yars' Revenge, Pitfall!, and Star Wars: The Empire Strikes Back. They describe the technical constraints and affordances of the system and track developments in programming, gameplay, interface, and aesthetics. Adventure, for example, was the first game to represent a virtual space larger than the screen (anticipating the boundless virtual spaces of such later games as World of Warcraft and Grand Theft Auto), by allowing the player to walk off one side into another space; and Star Wars: The Empire Strikes Back was an early instance of interaction between media properties and video games. Montfort and Bogost show that the Atari VCS—often considered merely a retro fetish object—is an essential part of the history of video games.