نتایج جستجو برای: electromagnetic induction
تعداد نتایج: 273007 فیلتر نتایج به سال:
Modern macroscopic electromagnetism employs four differential equations containing four vector fields, a source charge density, and a source current density. Two of the four fields (i.e., Ẽ (x, t) and B̃ (x, t)) are primitive fields, while the remaining two (i.e., D̃ (x, t) and H̃ (x, t)) are induction fields. Unlike the primitive fields, the induction fields do not have microscopic existence and ...
We show that the problem of unifying electromagnetism with gravity has an elegant solution in classical physics through the phenomenon of induction. By studying the way that induction leads to the formation of electromagnetic fields, we identify the classical field equations which the unified field must satisfy and a corresponding set of constitutive equations for the medium sustaining the fiel...
introduction: it is important that biological and health effects from the induction of currents and fields in the body by extremely low frequency (elf) fields are fully explored to determine the effects produced at the molecular, cellular and organ levels. the objective of this study was to evaluate the intensity of elf electromagnetic fields and its probable relationship with hematological cha...
چکیده ندارد.
Induction sensors (also known as search coils), because of their measuring principle, are dedicated to varying magnetic field measurement. Despite the disadvantage of their size, induction magnetometer remains indispensable in numerous fields due to their sensitivity and robustness whether for natural electromagnetic waves analysis on Earth Lichtenberger et al. (2008), geophysics studies using ...
Complex electrical activities in cardiac tissue can set up time-varying electromagnetic field. Magnetic flux is introduced into the Fitzhugh-Nagumo model to describe the effect of electromagnetic induction, and then memristor is used to realize the feedback of magnetic flux on the membrane potential in cardiac tissue. It is found that a spiral wave can be triggered and developed by setting spec...
background: rapidly increasing possibilities of exposure to environmental extremely low-frequency electromagnetic fields (elf-emf) have become a topic of worldwide investigation. epidemiological and laboratory studies suggest that exposure to elf-emf may increase cancer risk therefore assessment of chromosomal damage in various cell lines might be of predictive value for future risk estimation....
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