نتایج جستجو برای: electrodynamic effects
تعداد نتایج: 1545281 فیلتر نتایج به سال:
This article discusses three current medical and environmental problems that use microwave technologies to solve. The first task was related the influence of magnetic field on human body. At same time, special attention paid its deficiency, which leads undesirable consequences need for correction. second diagnosis therapy brain tumors. results studies possibility virtual diagnostics cerebral ed...
Linear vibrator and slot radiators, i.e., radiators of electric and magnetic type, respec‐ tively, are widely used as separate receiver and transmitter structures, elements of an‐ tenna systems, and antenna-feeder devices, including combined vibrator-slot structures. Widespread occurrence of such radiators is an objective prerequisite for theoretical analysis of their electrodynamic characteris...
In recent experiments, very low amplitudes of light scattering were reported for a tightly focused laser beam on a glass microcapillary. This result may be of great importance for single molecule detection in liquids. In the present paper, a theoretical study of the problem of light scattering of a focused laser beam on a cylindrical glass capillary is given. The numerical calculations are base...
The evaporation and the thermal accommodation coefficients for water in nitrogen were investigated by means of the analysis of evaporation of pure water droplet as a function of temperature. The droplet was levitated in an electrodynamic trap placed in a climatic chamber. The levitation time was in the range of seconds, which corresponds to the characteristic time scales of cloud droplet growth...
A convenient mathematical formulation is given for the absolute lowfrequency response of an electrodynamic direct radiator loudspeaker mounted in a vented or unvented enclosure. The combined effects of speaker Q (ratio of reactance to resistance), enclosure size, and enclosure tuning are shown to control the convergence of the response curve towards ts asymptotic value. Mathematical criteria ar...
We describe a simplified derivation for the relativistic corrections of order α 4 for a bound system consisting of two spinless particles. We devote special attention to pionium, the bound system of two oppositely charged pions. The leading quantum electrodynamic (QED) correction to the energy levels is of the order of α 3 and due to electronic vacuum polarization. We analyze further correction...
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