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Written so as to be understood by the non-technical reader who is curious about the origin of all the electrical and electromagnetic devices that surround him, this history also provides a convenient compendium of information for those familiar with the electrical and magnetic fields. The book moves along at a rapid pace, as it must if it is to cover the enormous proliferation of developments that have occurred during the last hundred years or so.The author has struck a workable balance between the human side of his story, introducing those biographical details that help advance it, and its technical side, explaining theories and "how things work" where this seems appropriate. He also achieves a balance in recounting the discovery of basic scientific principles and their technological applications--the myriad of devices and inventions that utilize energy and information in electromagnetic form.Indeed, one of the important themes of the book is the close and reciprocal relationship between science and technology, between theory and practice. Before approximately 1840, the purely scientific investigations of electrical and magnetic phenomena were largely "ad hoc" and observational, and essentially no technology based on them existed. Afterwards, the scientific explorations became more programmatic and mathematical, and technical applications and inventions began to be produced in great abundance. In return, this technology paid its debt to pure science by providing it with a series of measuring instruments and other research devices that allowed it to advance in parallel.Although this book reviews the early discoveries, from the magnetic lodestone and electrostatic amber of antiquity to Galvani's frog's legs and Franklin's kite-and-key of the 1700s, its major emphasis is on the post-1840 developments, as the following chapter titles will confirm: Early Discoveries--Electrical Machines and Experiments with Static Electricity--Voltaic Electricity, Electrochemistry, Electromagnetism, Galvanometers, Ampere, Biot and Savart, Ohm--Faraday and Henry--Direct Current Dynamos and Motors--Improvements in Batteries, Electrostatic Machines, and Other Older Devices--Electrical Instruments, Laws, and Definitions of Units--The Electric Telegraph--The Atlantic Cable--The Telephone--Electric Lighting--Alternating Currents--Electric Traction--Electromagnetic Waves, Radio, Facsimile, and Television--Microwaves, Radar, Radio Relay, Coaxial Cable, Computers--Plasmas, Masers, Lasers, Fuel Cells, Piezoelectric Crystals, Transistors--X-Rays, Radioactivity, Photoelectric Effect, Structure of the Atom, Spectra.
The author introduces the concept that superconductivity can establish a perfect formalism of electricity and magnetism. The correspondence of electric materials that exhibit perfect electrostatic shielding (E=0) in the static condition and superconductors that show perfect diamagnetism (B=0) is given to help readers understand the relationship between electricity and magnetism. Another helpful aspect with the introduction of the superconductivity feature perfect diamagnetism is that the correspondence in the development of the expression of magnetic energy and electric energy is clearly shown. Additionally, the basic mathematical operation and proofs are shown in an appendix, and there is full use of examples and exercises in each chapter with thorough answers.
This volume deals with the theory of electromagnetism using a descriptive and geometrical approach. It also contains biological topics which can serve as applications of the theory for students of chemistry or biology.
The final volume in a three-part series, Electricity and Magnetism provides a detailed exposition of classical electric and magnetic fields and analyses of linear electric circuits. The book applies the principles of classical mechanics to systematically reveal the laws governing observed electric and magnetic phenomena. The text culminates in Maxwell's Equations, which, although only four in number, can completely describe all physical aspects of electromagnetism. The specific topics covered in Electricity and Magnetism include: Electric force, field, and potential Gauss's Law for Electric Fields Capacitance and networks of capacitors Electric current Resistance and networks of resistors Kirchoff's Rules Steady state and time-dependent DC circuit dynamics Magnetic force and field Production of magnetic fields Ampère's Law Gauss's Law for Magnetic Fields Faraday's Law Induction and inductance AC-driven circuit dynamics and energetics Maxwell's Equations and their plane-wave vacuum solutions This text extends the rigorous calculus-based introduction to classical physics begun in Elements of Mechanics. It may be studied independently of the second volume, Properties of Materials. With more than four hundred and fifty problems included, it can serve as a primary textbook in an introductory physics course, as a student supplement, or as an exam review for graduate or professional studies.
The Present edition of our book is a redesigned and updated version of the earlier edition. The Chapters have been redesigned and a number of concepts have been rewritten for better clarification. The diagrams have been redrawn and relabelled and the “layout” and “printing” has been improved. We have provided a large number of solved problems to enable the reader to understand the intricacies of solving the basic problem of: • Electrostatics (calculation of electric field for a variety of charge distributions) and • Magnetism (calculation of the magnetic field for a variety of current distributions). • Parallel AC Circuit analysis, using complex numbers
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