Amplitude and frequency modulations
Feature information transmission in the form of electromagnetic waves. Carrying out the method of amplitude modulation of the sound in the mid-1870s. Exposure frequency inflexion effects of physical barriers. The primary analysis of popularity FM-radio.
Подобные документы
Analysis of obtaining coatings based on (Ti-Zr-Nb)N by means of vacuum-arc deposition method. Study of their physical and mechanical properties and tribotechnical characteristics. Analysis of chemical composition of elements in the coating (Ti-Zr-Nb)N.
статья, добавлен 23.12.2016An efficient technique for analysis of waveguides, resonators and waveguide discontinuities in electromagnetic bandgap structures. Waveguides and resonators formed by elements removed from EBG array are considered. The first step is a solution of problem.
статья, добавлен 04.11.2018The classical electromagnetic interaction of a point charge. The Darwin-Lagrangian and electromagnetic fields. Two-particle model for a magnetic moment. Conservation laws and transition to a multiparticle magnet. Forces in the multiparticle limit.
статья, добавлен 11.09.2012Conducting anhydrous nitriding in a glow discharge with AC power supply of industrial frequency. Analysis of switching the shape of pulses, changes in their polarity, which is solved by the introduction of a device for nitriding in a glow discharge.
статья, добавлен 03.06.2022Russian experience in the field of non-traditional microwave electronics based on electron beam transverse waves using is discussed in a form of short review. Strictest requirements are placed on a powerful output amplifier and a low-noise input device.
статья, добавлен 04.11.2018Analytical comparison of the accuracy of numerical solutions obtained by the FDTD method and the Godunov method in solving telegraph equations. The advantages of the design scheme based on the Godunov method in the analysis of dynamic modes in long lines.
статья, добавлен 02.02.2019The energy-momentum distribution and the mechanical forces of the electromagnetic field in material media. The discussion of the energy-momentum tensor in macroscopic electrodynamics. The Maxwell stress tensor. Electromagnetic force in James’ experiment.
статья, добавлен 11.09.2012Analysis of features of the power system of organism. Essence of concept is a "biofield". Life as continuous process of absorption of energy of different kinds and different values. Biological aspects of influence of the electromagnetic fields on a man.
реферат, добавлен 08.11.2012Methods of construction of the automated test systems of radio-electronic technique objects. The basic directions of improvement of existing test systems. Principles and methods of reception and processing of the diagnostic information for AA SD RET.
статья, добавлен 22.12.2016Mathematical formula of W. Sabine for calculating the reverberation time in a room, a measure of how quickly or slowly sound energy dies away in an enclosed space. Studying the behavior of sound in rooms and absorption of sound energy by the materials.
статья, добавлен 09.09.2012Split-phase symmetrical motor drive on the base of two voltage source inverters, controlled by algorithms of synchronized pulse width modulation, has been investigated. Simulation results are presented for dual three-phase power conversion systems.
статья, добавлен 02.02.2019Connection graph theory and formulation of general class physical systems over force interactions. Force factors are effort and flow. Different interpretations in different physical fields. Using power to simulate connected systems in energy fields.
статья, добавлен 28.08.2020Nanofluids are liquids suspensions containing nanoparticles dispersed in a liquid. An investigation is for measurement of the freezing point and studying the supercooling point. The T-historic method based on the measurement of the point of inflexion.
статья, добавлен 17.04.2013A transmission line model is used to design log periodic of bow-tie antennas arrays operating in C band fed in series with enhanced bandwidth. The transmission line model is simple, precise and allowing taking into account the whole geometrical, electric.
статья, добавлен 04.11.2018The formulation of a metric model that satisfies the requirements of quantum theory. Description of gravitational waves by the Liouville equation. Proof of the Schrodinger conjecture on the connection between the wave function and gravitational waves.
статья, добавлен 13.05.2017Issues of scientific justification of electromagnetic compatibility assurance links, reliability theory and resources in the creation and operation of electrical complexes in electric power networks and systems. The increase in resource of electrical.
статья, добавлен 28.01.2020The acquaintance with the peculiarities of the spatial distribution of electromagnetic fields. The characteristic features of Electromechanical disintegrator. Consideration of methods of distribution of eddy currents in the working conductive camera EMD.
статья, добавлен 29.07.2016The results of investigation multilayer TiN / MoN coatings. Arc-PVD method. Parameters of multilayer TiN/MoN deposition. The energy-dispersive spectrum of coating. Sims depth profile analysis of positive secondary ions. Tem-eds chemical mapping.
статья, добавлен 23.12.2016The force on a macroscopic polarizable body in an inhomogeneous electromagnetic field is calculated for simple exactly solvable situations. Different approaches pinpoint possible pitfalls and resolve recent confusion about a force density in ferrofluids.
статья, добавлен 11.09.2012Maxwell’s equations and the equations governing charged particle dynamics. The relevant entities in these equations. Ambiguities in the definitions of the electromagnetic fields. A related term in the energy equation. Geodesics and Lorentz force.
статья, добавлен 11.09.2012The C-V characteristics of n-channel JFET have been measured as a function of temperature up to 140 0C and γ rays up to 100 kGy. The results show that the input capacitance Ciss is increasing function of temperature when measured at low frequency ban
статья, добавлен 03.11.2018Infinitesimal transformations, Maxwell tensor and electromagnetic forces. The Maxwell field tensor. Integral curves associated with the equations of motion and the end of the Lorentz transformation. Electromagnetic force and geometry of space-time.
статья, добавлен 11.09.2012Description and study of electrodynamic processes in simple metaldielectric waveguide. Determination of the structure of the electromagnetic field in the waveguide, parameters of the guide system of dispersion equations and parameters of their own waves.
статья, добавлен 24.06.2016The analytical expression for the calculation of the relay mode frequency and power. Development of parameters of electric energy converters. The absence of the phase shift between voltage and current. Solution EMC problems. The reduction of power losses.
статья, добавлен 29.07.2016Investigation of size effects in hydrogen-bonded crystals by numerical solution of the kinetic equation in finite differences, by finite difference method Calculation of the current density of thermally stimulated depolarization in finite differences.
реферат, добавлен 24.10.2014