Download or read book The Electrostatic Potential Inside a Hemisphere written by A. R. Frederickson and published by . This book was released on 1971 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dirichlet Green's function for the interior of a hemisphere has been found and an integral expression for the electrostatic potential is given. A computer program has been written to calculate the potential and plot equipotential lines for cases with azimuthal symmetry in internal charge distribution and surface potential. Graphs of phi are given for an evacuated hemispherical chamber where the walls are divided into three elements. This triode configuration can be used as a vacuum tube device or as a retarding potential analyzer. The use of the device as an energy analyzer is discussed and methods for calculating its spectral response are given. A particular model of the device has been successfully used to measure low-energy electron emission due to high energy radiation. (Author).
Download or read book The Electrostatic Potential Inside a Hemisphere Its Use as an Electron Energy Analyzer and as a Triode Electronic Device written by A. R. Frederickson and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dirichlet Green's function for the interior of a hemisphere has been found and an integral expression for the electrostatic potential is given. A computer program has been written to calculate the potential and plot equipotential lines for cases with azimuthal symmetry in internal charge distribution and surface potential. Graphs of phi are given for an evacuated hemispherical chamber where the walls are divided into three elements. This triode configuration can be used as a vacuum tube device or as a retarding potential analyzer. The use of the device as an energy analyzer is discussed and methods for calculating its spectral response are given. A particular model of the device has been successfully used to measure low-energy electron emission due to high energy radiation. (Author)
Download or read book Understanding the Causes of Asymmetries in Earth s Magnetosphere Ionosphere System written by Denny Oliveira and published by Frontiers Media SA. This book was released on 2023-04-25 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Systems Analysis A Functional Organization A Customer Users Library CUL written by Eunice C. Cronin and published by . This book was released on 1972 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systems analysis technique is applied to the scientific problem solving requirements of a major Air Force research organization to establish: The functional organization of a research support group; A valuable data base for a Customer User Library (CUL); and A Management Information System for scheduling, reporting and control. The report summarizes the functional organization of the Analysis and Simulation Branch of the Computation Center at AFCRL as derived from an analysis of the spectrum of analytical and computational problems originating in the Laboratories. A detailed description the structure and mode of operation of the Customer User Library is provided, together with a discussion of the associated Management Information System. An extensive listing of scientific problem abstracts is provided in the Appendices.
Download or read book Electromagnetic Fields Energy and Forces written by Robert M. Fano and published by Taylor & Francis. This book was released on with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Backemission of Electrons from Metals Irradiated by 0 2 MeV to 1 4 MeV Electrons written by A. R. Frederickson and published by . This book was released on 1971 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-energy and high-energy electron yields have been measured from Al, Cu, Ta, and Pb targets bombarded by 0.2 MeV to 1.4 MeV electrons. An improved apparatus, the hemispherical triode, is shown to be very effective in measuring the total yield of high-energy electrons (= or > 100 eV) and the total yield of low-energy electrons (
Download or read book Observations Modeling and Systems Analysis in Geomagnetic Data Interpretation written by Alexei Gvishiani and published by Springer Nature. This book was released on 2020-09-17 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geomagnetic field penetrates through all shells of the solid Earth, hydrosphere and atmosphere, spreading into space. The Earth Magnetic Field plays a key-role in major natural processes. Geomagnetic field variations in time and space provide important information about the state of the solid Earth, as well as the solar-terrestrial relationships and space weather conditions. The monograph presents a set of fundamental and, at the same time, urgent scientific problems of modern geomagnetic studies, as well as describes the results of the authors’ developments. The new technique introduced in the book can be applied far beyond the limits of Earth sciences. Requirements to corresponding data models are formulated. The conducted experimental investigations are combined with development and implementation of new methods of mathematical modeling, artificial intelligence, systems analysis and data science to solve the fundamental problems of geomagnetism. At that, formalism of Big Data and its application to Earth Sciences is presented as essential part of systems analysis. The book is intended for research scientists, tutors, students, postgraduate students and engineers working in geomagnetism and Earth sciences in general, as well as in other relevant scientific disciplines.
Download or read book Materials Modelling Using Density Functional Theory written by Feliciano Giustino and published by Oxford University Press. This book was released on 2014 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explains the fundamental ideas of density functional theory, and how this theory can be used as a powerful method for explaining and even predicting the properties of materials with stunning accuracy.
Download or read book Modern Electrodynamics written by Andrew Zangwill and published by Cambridge University Press. This book was released on 2013 with total page 1005 pages. Available in PDF, EPUB and Kindle. Book excerpt: An engaging writing style and a strong focus on the physics make this graduate-level textbook a must-have for electromagnetism students.
Download or read book Modern Developments in Vacuum Electron Sources written by Georg Gaertner and published by Springer Nature. This book was released on 2020-10-09 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of modern cathodes and electron emitters for vacuum tubes and vacuum electron devices in general. It covers the latest developments in field emission theory as well as new methods towards improving thermionic and cold cathodes. It addresses thermionic cathodes, such as oxide cathodes, impregnated and scandate cathodes, as well as photocathodes and field emitters – the latter comprising carbon nanotubes, graphene and Spindt-type emitter arrays. Despite the rise and fall of the once dominant types of vacuum tubes, such as radio valves and cathode ray tubes, cathodes are continually being improved upon as new applications with increased demands arise, for example in electron beam lithography, high-power and high-frequency microwave tubes, terahertz imaging and electron sources for accelerators. Written by 17 experts in the field, the book presents the latest developments in cathodes needed for these applications, discussing the state of the art and addressing future trends.
Download or read book Mathematical Methods written by Sadri Hassani and published by Springer Science & Business Media. This book was released on 2008-10-27 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended to follow the usual introductory physics courses, this book has the unique feature of addressing the mathematical needs of sophomores and juniors in physics, engineering and other related fields. Many original, lucid, and relevant examples from the physical sciences, problems at the ends of chapters, and boxes to emphasize important concepts help guide the student through the material. Beginning with reviews of vector algebra and differential and integral calculus, the book continues with infinite series, vector analysis, complex algebra and analysis, ordinary and partial differential equations. Discussions of numerical analysis, nonlinear dynamics and chaos, and the Dirac delta function provide an introduction to modern topics in mathematical physics. This new edition has been made more user-friendly through organization into convenient, shorter chapters. Also, it includes an entirely new section on Probability and plenty of new material on tensors and integral transforms.
Download or read book Magnetospheric Current Systems written by Shin-ichi Ohtani and published by American Geophysical Union. This book was released on 2000-01-10 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 118. The magnetosphere is an open system that interacts with the solar wind. In this system, solar wind energy continuously permeates different regions of the magnetosphere through electromagnetic processes, which we can well describe in terms of current systems. In fact, our ability to use various methods to study magnetospheric current systems has recently prompted significant progress in our understanding of the phenomenon. Unprecedented coverage of satellite and ground?]based observations has advanced global approaches to magnetospheric current systems, whereas advanced measurements of electromagnetic fields and particles have brought new insights about micro?]processes. Increased computer capabilities have enabled us to simulate the dynamics not only of the terrestrial magnetosphere but also the magnetospheres of other planets. Based on such developments, the present volume revisits outstanding issues about magnetospheric current systems.
Download or read book Auroral Dynamics and Space Weather written by Yongliang Zhang and published by John Wiley & Sons. This book was released on 2015-11-13 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aurora is the most visible manifestation of the connection of the Earth to the space environment and has inspired awe, curiosity, and scientific inquiry for centuries. Recent advances in observing techniques and modeling and theoretical work have revealed new auroral phenomena, provided a better understanding of auroral dynamics, and have led to an enhanced capability for auroral forecasts. This monograph features discussions of: New auroral phenomena due to the ring current ion and polar rain electron precipitation Various auroral forms and hemispheric asymmetry Auroral model development and MHD simulations Application of the auroral observations for radio absorption and scintillation Aurora nowcast and forecast for space weather operations Auroral Dynamics and Space Weather is a valuable contribution for scientists, researchers, space weather operators, and students of Earth's space environment.
Download or read book Advances in Earth and Planetary Sciences written by and published by . This book was released on 1980 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Geophysics written by William Lowrie and published by Cambridge University Press. This book was released on 2020-01-02 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: This enduringly popular undergraduate textbook has been thoroughly reworked and updated, and now comprises twelve chapters covering the same breadth of topics as earlier editions, but in a substantially modernized fashion to facilitate classroom teaching. Covering both theoretical and applied aspects of geophysics, clear explanations of the physical principles are blended with step-by-step derivations of the key equations and over 400 explanatory figures to explain the internal structure and properties of the planet, including its petroleum and mineral resources. New topics include the latest data acquisition technologies, such as satellite geophysics, planetary landers, ocean bottom seismometers, and fibre optic methods, as well as recent research developments in ambient noise interferometry, seismic hazard analysis, rheology, and numerical modelling - all illustrated with examples from the scientific literature. Student-friendly features include separate text boxes with auxiliary explanations and advanced topics of interest; reading lists of foundational, alternative, or more detailed resources; end-of-chapter review questions and an increased number of quantitative exercises. Completely new to this edition is the addition of computational exercises in Python, designed to help students acquire important programming skills and develop a more profound understanding of geophysics.
Download or read book Fundamentals of Electromagnetism written by Arturo Lopez Davalos and published by Springer Science & Business Media. This book was released on 1999-07-05 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is a revised and enlarged version of notes for a one-semester course on electromagnetism. It covers the theory of electromagnetic phenomena in vacuum and in material media. The book includes a CD-ROM with didactic software, to solve boundary value problems in electrostatics and magnetostatics.
Download or read book Fundamentals of Physics Volume 2 written by David Halliday and published by John Wiley & Sons. This book was released on 2021-10-05 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renowned for its interactive focus on conceptual understanding, its superlative problem-solving instruction, and emphasis on reasoning skills, the Fundamentals of Physics: Volume 2, 12th Edition, is an industry-leading resource in physics teaching. With expansive, insightful, and accessible treatments of a wide variety of subjects, including photons, matter waves, diffraction, and relativity, the book is an invaluable reference for physics educators and students. In the second volume of this two-volume set, the authors discuss subjects including Coulomb???s Law, Gauss??? Law, and Maxwell???s Equations.
