Pushing Electrons


Book Description




Pushing Electrons


Book Description

Lewis structures. Resonance structures. Mechanisms. On solving mechanism problems. Some reactions from biochemestry.




Arrow Pushing in Organic Chemistry


Book Description

Find an easier way to learn organic chemistry with Arrow-Pushing in Organic Chemistry: An Easy Approach to Understanding Reaction Mechanisms, a book that uses the arrow-pushing strategy to reduce this notoriously challenging topic to the study of interactions between organic acids and bases. Understand the fundamental reaction mechanisms relevant to organic chemistry, beginning with Sn2 reactions and progressing to Sn1 reactions and other reaction types. The problem sets in this book, an excellent supplemental text, emphasize the important aspects of each chapter and will reinforce the key ideas without requiring memorization.




Arrow Pushing in Inorganic Chemistry


Book Description

Involved as it is with 95% of the periodic table, inorganic chemistry is one of the foundational subjects of scientific study. Inorganic catalysts are used in crucial industrial processes and the field, to a significant extent, also forms the basis of nanotechnology. Unfortunately, the subject is not a popular one for undergraduates. This book aims to take a step to change this state of affairs by presenting a mechanistic, logical introduction to the subject. Organic teaching places heavy emphasis on reaction mechanisms - "arrow-pushing" - and the authors of this book have found that a mechanistic approach works just as well for elementary inorganic chemistry. As opposed to listening to formal lectures or learning the material by heart, by teaching students to recognize common inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing, this book serves as a gentle and stimulating introduction to inorganic chemistry, providing students with the knowledge and opportunity to solve inorganic reaction mechanisms. • The first book to apply the arrow-pushing method to inorganic chemistry teaching • With the reaction mechanisms approach ("arrow-pushing"), students will no longer have to rely on memorization as a device for learning this subject, but will instead have a logical foundation for this area of study • Teaches students to recognize common inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing • Provides a degree of integration with what students learn in organic chemistry, facilitating learning of this subject • Serves as an invaluable companion to any introductory inorganic chemistry textbook




Introductory Organic Reaction Mechanisms: A color-coded approach to arrow pushing


Book Description

To master Organic Chemistry, it is essential to master mechanism. This book uses a novel approach to help you better understand the mechanisms of 80 common organic reactions. Each one is color coded so that you can clearly see the changes that take place during the reaction. The electrons involved in the mechanism are color coded, as are the arrows originating from those electrons and the bonds or lone pairs formed by them in the intermediates and product. As a result, you can trace specific pairs of electrons through an entire transformation. The description of what each mechanistic arrow means is color coded correspondingly so that it is easy to match up the text with the relevant portion of a reaction diagram.




Mechanism and Synthesis


Book Description

This book pursues possible strategies for synthesising mainly organic compounds, particularly those of interest to the health sector and related industries. Topics covered include addition reactions of aldehydes and ketones; the use of organometallic reagents to form carbon-carbon bonds (eg Grignard reagents); and radical reactions, including selectivity and chain reactions. Retrosynthetic analysis is introduced as a strategy for developing syntheses, along with biochemical pathways. Mechanism and Synthesis concludes with a Case Study on polymers, which demonstrates how chain reactions can be used to build up useful materials with specific properties, such as contact lenses. The Molecular World series provides an integrated introduction to all branches of chemistry for both students wishing to specialise and those wishing to gain a broad understanding of chemistry and its relevance to the everyday world and to other areas of science. The books, with their Case Studies and accompanying multi-media interactive CD-ROMs, will also provide valuable resource material for teachers and lecturers. (The CD-ROMs are designed for use on a PC running Windows 95, 98, ME or 2000.)




Transmission Electron Microscopy


Book Description

The aim of this book is to outline the physics of image formation, electron specimen interactions and image interpretation in transmission electron mic roscopy. The book evolved from lectures delivered at the University of Munster and is a revised version of the first part of my earlier book Elek tronenmikroskopische Untersuchungs- und Priiparationsmethoden, omitting the part which describes specimen-preparation methods. In the introductory chapter, the different types of electron microscope are compared, the various electron-specimen interactions and their applications are summarized and the most important aspects of high-resolution, analytical and high-voltage electron microscopy are discussed. The optics of electron lenses is discussed in Chapter 2 in order to bring out electron-lens properties that are important for an understanding of the function of an electron microscope. In Chapter 3, the wave optics of elec trons and the phase shifts by electrostatic and magnetic fields are introduced; Fresnel electron diffraction is treated using Huygens' principle. The recogni tion that the Fraunhofer-diffraction pattern is the Fourier transform of the wave amplitude behind a specimen is important because the influence of the imaging process on the contrast transfer of spatial frequencies can be described by introducing phase shifts and envelopes in the Fourier plane. In Chapter 4, the elements of an electron-optical column are described: the electron gun, the condenser and the imaging system. A thorough understanding of electron-specimen interactions is essential to explain image contrast.




Conquering the Electron


Book Description

Conquering the Electron offers readers a true and engaging history of the world of electronics, beginning with the discoveries of static electricity and magnetism and ending with the creation of the smartphone and the iPad. This book shows the interconnection of each advance to the next on the long journey to our modern-day technologies. Exploring the combination of genius, infighting, and luck that powered the creation of today's electronic age, Conquering the Electron debunks the hero worship so often plaguing the stories of great advances. Want to know how AT&T’s Bell Labs developed semiconductor technology—and how its leading scientists almost came to blows in the process? Want to understand how radio and television work—and why RCA drove their inventors to financial ruin and early graves? Conquering the Electron offers these stories and more, presenting each revolutionary technological advance right alongside blow-by-blow personal battles that all too often took place.




An Assessment of U.S.-Based Electron-Ion Collider Science


Book Description

Understanding of protons and neutrons, or "nucleons"â€"the building blocks of atomic nucleiâ€"has advanced dramatically, both theoretically and experimentally, in the past half century. A central goal of modern nuclear physics is to understand the structure of the proton and neutron directly from the dynamics of their quarks and gluons governed by the theory of their interactions, quantum chromodynamics (QCD), and how nuclear interactions between protons and neutrons emerge from these dynamics. With deeper understanding of the quark-gluon structure of matter, scientists are poised to reach a deeper picture of these building blocks, and atomic nuclei themselves, as collective many-body systems with new emergent behavior. The development of a U.S. domestic electron-ion collider (EIC) facility has the potential to answer questions that are central to completing an understanding of atoms and integral to the agenda of nuclear physics today. This study assesses the merits and significance of the science that could be addressed by an EIC, and its importance to nuclear physics in particular and to the physical sciences in general. It evaluates the significance of the science that would be enabled by the construction of an EIC, its benefits to U.S. leadership in nuclear physics, and the benefits to other fields of science of a U.S.-based EIC.




The God Effect


Book Description

“A marvelously clear and engaging account of . . . the deepest mysteries of the quantum world and [converting] them into a useful technology.” —Gregory Chaitin, author of Meta Math! The Quest for Omega What is entanglement? It’s a connection between quantum particles, the building blocks of the universe. Once two particles are entangled, a change to one of them is reflected—instantly—in the other, be they in the same lab or light-years apart. So counterintuitive is this phenomenon and its implications that Einstein himself called it “spooky” and thought that it would lead to the downfall of quantum theory. Yet scientists have since discovered that quantum entanglement, the “God Effect,” was one of Einstein’s few mistakes. What does it mean? The possibilities offered by a fuller understanding of the nature of entanglement read like something out of science fiction: communications devices that could span the stars, codes that cannot be broken, computers that dwarf today’s machines in speed and power, teleportation, and more. In The God Effect, veteran science writer Brian Clegg has written an exceptionally readable (and equation-free) account of entanglement, its history, and its application. Those interested in the marvelous possibilities coming down the quantum road will find much to marvel, illuminate, and delight. “Clegg does an excellent job of explaining this complex situation in nontechnical terms . . . implications for future technological advances are huge, and Clegg is at his finest as he embeds potential advances in a broad historical context.” —Publishers Weekly “Well organized and succinct. . . . will fascinate [students].” —School Library Journal “Delightful. . . . The author does a superb job of presenting the story of a remarkable concept . . . in a relaxed and entertaining style.” —Professor Artur Ekert, Leigh Trapnell Professor of Quantum Physics, Cambridge University