Electromagnetic energy

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  • Lecture Engineering electromagnetics - Energy and potential include all of the following content: Moving a point charge in an electric field, the line integral, potential difference and potential, the potential field of a point charge, the potential field of a system of charges, potential gradient, the dipole, energy density in the electrostatic field.

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  • This book is dedicated to various aspects of electromagnetic wave theory and its applications in science and technology. The covered topics include the fundamental physics of electromagnetic waves, theory of electromagnetic wave propagation and scattering, methods of computational analysis, material characterization, electromagnetic properties of plasma, analysis and applications of periodic structures and waveguide components, and finally, the biological effects and medical applications of electromagnetic fields....

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  • Lately, there has been a growing interest in electromagnetic wave propagation in complex systems such as modern materials and structures. This book is intended to give the explanatory 20 chapters which consist of original works of the leading scientists in the field of wave propagation which produced theoretical and experimental methods in this field of research and obtained important results.

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  • Tham khảo sách 'behaviour of electromagnetic waves in different media and structure_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Before we can talk about solar power, we need to talk about the sun • Need to know how much sunlight is available • Can predict where the sun is at any time • Insolation : incident solar radiation • Want to determine the average daily insolation at a site • Want to be able to chose effective locations and panel tilts of solar panels

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  • This book is based on the contributions of several authors in electromagnetic waves propagations. Several issues are considered. The contents of most of the chapters are highlighting non classic presentation of wave propagation and interaction with matters. This book bridges the gap between physics and engineering in these issues. Each chapter keeps the author notation that the reader should be aware of as he reads from chapter to the other. The author’s notations are kept in order to eliminate any possible unintentional errors that might lead to confusion.

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  • This chapter presents the following content: Force on a moving charge, force on a differential current element, force between differential current elements, force and torque on a closed circuit, magnetization and permeability, magnetic boundary conditions, the magnetic circuit, potential energy of magnetic fields, inductance and mutual inductance.

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  • Electric motors convert electrical energy into mechanical energy by utilizing the properties of electromagnetic energy conversion. The different types of motors operate in different ways and have different methods of calculating the performance, but all utilize some arrangement of magnetic fields. Understanding the concepts of electromagnetics and the systems of units that are employed is essential to understanding electric motor operation.The first part of this chapter covers the concepts and units and shows how forces are developed.

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  • Practical TCP/IP and Ethernet Networking- P5: The transmitter encodes the information into a suitable form to be transmitted over the communications channel. The communications channel moves this signal as electromagnetic energy from the source to one or more destination receivers. The channel may convert this energy from one form to another, such as electrical to optical signals, whilst maintaining the integrity of the information so the recipient can understand the message sent by the transmitter....

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  • Solar energy is defined as that radiant energy transmitted by the sun and intercepted by earth. It is transmitted through space to earth by electromagnetic radiation with wavelengths ranging between 0.20 and 15 microns.

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  • What is Motor ? Motor is a devices that change electrical energy to mechanical energy. It is devide into two type; DC Motor AC Motor

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  • Communication happens in the form of signals. Signals are transmission of energy (mechanical, electrical or light) through appropriate media. A signal that is constant and changed once conveys single information. The more changes in the signal, the more information that the signal can convey. For example, a push can mean one thing and removing it can mean another thing.

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  • Recent advents in laser technology and discoveries in laser physics have enabled their very new and exciting applications. Some of them cover production of new materials: nano-particles, periodic structures in nano-scale, and thin films. Others allowed better understanding of laser-matter interaction when sample is subjected to intense laser pulses of various time duration, shape in space and time domains as well as different spectral components contained in a pulse.

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  • Electronics is a science about the devices and processes that use electromagnetic energy conversion to transfer, process, and store energy, signals and data in energy, control, and computer systems. This science plays an important role in the world progress.

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  • AMPLITUDE MODULATED RADIO TRANSMITTER A radio signal can be generated by causing an electromagnetic disturbance and making suitable arrangements for this disturbance to be propagated in free space. The equipment normally used for creating the disturbance is the transmitter, and the transmitter antenna ensures the efficient propagation of the disturbance in free space. To detect the disturbance, one needs to capture some finite portion of the electromagnetic energy and convert it into a form which is meaningful to one of the human senses...

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  • Practical TCP/IP and Ethernet Networking- P9: The transmitter encodes the information into a suitable form to be transmitted over the communications channel. The communications channel moves this signal as electromagnetic energy from the source to one or more destination receivers. The channel may convert this energy from one form to another, such as electrical to optical signals, whilst maintaining the integrity of the information so the recipient can understand the message sent by the transmitter....

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  • Practical TCP/IP and Ethernet Networking- P3: The transmitter encodes the information into a suitable form to be transmitted over the communications channel. The communications channel moves this signal as electromagnetic energy from the source to one or more destination receivers. The channel may convert this energy from one form to another, such as electrical to optical signals, whilst maintaining the integrity of the information so the recipient can understand the message sent by the transmitter....

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  • Electromechanical energy conversion is achievable in a number of ways. These possibilities rely on different fundamental laws of electrical engineering. As the only method that has importance on the large scale is electromechanical conversion achieved by means of electromagnetic converters, this section is fully devoted to the analysis of basic principles involved in electromagnetic electromechanical conversion.

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  • The use of intelligent materials which are capable of reacting to external stimuli is growing in the field of textiles. Conductive materials, metals as well as conducting polymers, are already being used in many textile applications, like antistatic materials, electromagnetic interference shielding, heating, transport of electrical signals, sensors etc.

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  • Undernutrition affects large populations of boys and girls in developing countries. Its major determinant is poverty, which usually combines with other important factors like poor breastfeeding practices and inadequate complementary foods for babies, as well as lack of basic health care, safe water and sanitation. Globally, about 150 million children under five years are undernourished, which comprises 27% of the world’s population in this age group. Twelve million of these children die every year, and protein-energy malnutrition is implicated in more than 55% of all these deaths.

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