By Allen Taflove
This commonly revised and increased 3rd version of the Artech residence bestseller, Computational Electrodynamics: The Finite-Difference Time-Domain process, deals engineers the main up to date and definitive source in this severe technique for fixing Maxwell's equations. the strategy is helping practitioners layout antennas, instant communications units, high-speed electronic and microwave circuits, and built-in optical units with unsurpassed potency. there was significant development in FDTD computational expertise over the last few years, and the 3rd variation brings execs the very most recent info with solely new chapters on vital recommendations, significant updates on key issues, and new discussions on rising parts comparable to nanophotonics. what is extra, to complement the 3rd version, the authors have created an internet site with suggestions to difficulties, downloadable pics and movies, and updates, making this new version the precise textbook at the topic besides.
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Additional resources for Computational electrodynamics : the finite-difference time-domain method
Mechanical waves comprise the most familiar class, which includes sound, earthquakes, ocean waves, and the motion of a guitar string. Electromagnetic waves (see chapter 4) include X-rays, light, and radio waves. Matter waves are used in quantum mechanics to describe atoms and subatomic particles such as electrons and neutrons. 3) have also been observed in the case of electrons and neutrons. The frequency of a wave refers to the rapidity with which the medium (in this case, air) oscillates. 4. 4a shows the time evolution of what happens at a fixed position when the wave passes by it.
It turns out that light is indeed a wave propagating via electric and magnetic fields, but in addition to exhibiting properties of waves (such as interference) it also exhibits properties of particles (such as momentum and localization). When treating light as particles, the individual quanta are called photons. , 2005, p. 868). These equations describe the mathematical connections between electrical charge, current, electric field, and magnetic field. The details of these equations and their interpretation are not of immediate concern to us here.
1 the regions of compression (called the wave front) and rarefaction move to the right. The sound is heard when this wave exerts a varying pressure on the eardrum. These vibrations are carried to the inner ear, where they are sensed within the cochlea. In air, sound propagates as a longitudinal wave, which means that the air molecules oscillate back and forth along the direction of wave propagation. 2 depicts the gas molecules in a hypothetical sound wave at five different moments in time as they move along the direction of propagation.