Document
... Magnetic Induction Application Magnetic data storage encodes information in a pattern of alternating magnetic fields. When these fields move past a small pick-up coil, the changing magnetic field implies an electric field which induces current in the coil. The current pulses represent the 0s and 1s ...
... Magnetic Induction Application Magnetic data storage encodes information in a pattern of alternating magnetic fields. When these fields move past a small pick-up coil, the changing magnetic field implies an electric field which induces current in the coil. The current pulses represent the 0s and 1s ...
A l - EN / Bilkent University
... that is the radio frequency (RF) heating at the tips of the implant leads. In the past, this problem has been analyzed with phantom, animal and human experiments. The amount of temperature rise at the lead tip of these implants, however, has not been theoretically analyzed. In this thesis, a simple ...
... that is the radio frequency (RF) heating at the tips of the implant leads. In the past, this problem has been analyzed with phantom, animal and human experiments. The amount of temperature rise at the lead tip of these implants, however, has not been theoretically analyzed. In this thesis, a simple ...
Electricity and Magnetism
... The first of these changes is due to the fact that the vast majority of courses on electricity and magnetism are now taught in SI units. The second edition fell out of print at one point, and it was hard to watch such a wonderful book fade away because it wasn’t compatible with the way the subject i ...
... The first of these changes is due to the fact that the vast majority of courses on electricity and magnetism are now taught in SI units. The second edition fell out of print at one point, and it was hard to watch such a wonderful book fade away because it wasn’t compatible with the way the subject i ...
Electromagnetics
... qualifying offers in many schools this course has gone from a two semester course to a one, alumni media mit edu - alumni media mit edu, electromagnetism and electricity for electromagnets - electronics tutorial about the electromagnetism and how electricity produces an electromagnet in a single con ...
... qualifying offers in many schools this course has gone from a two semester course to a one, alumni media mit edu - alumni media mit edu, electromagnetism and electricity for electromagnets - electronics tutorial about the electromagnetism and how electricity produces an electromagnet in a single con ...
Further VLBA Observations of SiO Masers toward Mira
... the Mira variable stars reported in Cotton et al. (2004) (o Ceti=Mira, U Orionis=U Ori, R Aquarii=R Aqr) over a period of 16 months, extending the observations to several pulsation cycles. The observed size of the maser rings varied by 3-14% with time but show no clear correlation with pulsation pha ...
... the Mira variable stars reported in Cotton et al. (2004) (o Ceti=Mira, U Orionis=U Ori, R Aquarii=R Aqr) over a period of 16 months, extending the observations to several pulsation cycles. The observed size of the maser rings varied by 3-14% with time but show no clear correlation with pulsation pha ...
ASTRONOMY AND ASTROPHYSICS Numerical simulations of stellar winds: polytropic models
... before every time step, we could get steady-state solutions where ...
... before every time step, we could get steady-state solutions where ...
Hydrodynamic simulations with a radiative surface Atefeh Barekat
... to about 35000 K, but the density decreases. This layer is visible during the solar eclipse. We can observe emission lines of helium due to the temperature increase in this layer.Above the chromosphere is the corona which has a low density but a high temperature up to 106 K. This high temperature is ...
... to about 35000 K, but the density decreases. This layer is visible during the solar eclipse. We can observe emission lines of helium due to the temperature increase in this layer.Above the chromosphere is the corona which has a low density but a high temperature up to 106 K. This high temperature is ...
Magnetic fields and mass loss in massive stars
... indicator of the presence of magnetic fields has been periodic variability observed in UV wind lines. Unfortunately only a limited sample of massive stars has timeseries of observations with satellites capable of UV spectroscopy such as Copernicus and IUE, which allow to resolve periodic variability ...
... indicator of the presence of magnetic fields has been periodic variability observed in UV wind lines. Unfortunately only a limited sample of massive stars has timeseries of observations with satellites capable of UV spectroscopy such as Copernicus and IUE, which allow to resolve periodic variability ...
An immersed-shell method for modelling fluid–structure interactions
... computationally expensive and might also yield highly distorted grids. In order to avoid this problem, another approach was developed. It consists of meshing the entire domain (containing both fluid and structures) and modelling the effect of the structures through surface or body forces. Because th ...
... computationally expensive and might also yield highly distorted grids. In order to avoid this problem, another approach was developed. It consists of meshing the entire domain (containing both fluid and structures) and modelling the effect of the structures through surface or body forces. Because th ...
James Clerk Maxwell on Theory Constitution and Conceptual Chains
... an electromotive force of an opposite (or the same) direction as compared to the current; and when the primary current is constant, no electromotive force is produced. Then, Maxwell considers cases of induction caused by the motion of either the primary or the secondary circuit. He then generalizes ...
... an electromotive force of an opposite (or the same) direction as compared to the current; and when the primary current is constant, no electromotive force is produced. Then, Maxwell considers cases of induction caused by the motion of either the primary or the secondary circuit. He then generalizes ...
GiRaFFE: An Open-Source General Relativistic Force
... (GRFFE) is far more numerically tractable. The equations of GRFFE are a limiting case of ideal GRMHD, in which the magnetic fields (as opposed to hydrodynamic densities and pressures) entirely drive the plasma dynamics. While technically it would be best to employ an algorithm that can accommodate a ...
... (GRFFE) is far more numerically tractable. The equations of GRFFE are a limiting case of ideal GRMHD, in which the magnetic fields (as opposed to hydrodynamic densities and pressures) entirely drive the plasma dynamics. While technically it would be best to employ an algorithm that can accommodate a ...
Manipulation of single vortices in YBa2Cu3O6.354 with a
... where bending of the vortices may occur. This should not affect studies of thin films. Second, the field coil applies a force over many square microns. It can only be used to manipulate a single vortex when the vortex is sufficiently isolated. This limitation could be reduced by designing different ...
... where bending of the vortices may occur. This should not affect studies of thin films. Second, the field coil applies a force over many square microns. It can only be used to manipulate a single vortex when the vortex is sufficiently isolated. This limitation could be reduced by designing different ...
Ferrofluid
A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.