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Magnetic field

en.wikipedia.org/wiki/Magnetic_field_lines

A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic ..... Magnetic poles cannot exist apart from each other as electric charges can, but always come in ...

Since magnetic field lines are just constructs the field cannot contain ...

www.answers.com/Q/Since_magnetic_field_lines_are_just_constructs_the_field_cannot_contain_energy

Since magnetic field lines are just constructs the field cannot contain energy? ... Magnetic Field Lines Show Magnitude and Direction: When the lines of the ...

Theory of electromagnetic fields

arxiv.org/pdf/1111.4354

pressions for the energy density and energy flux in an electromagnetic field. ... are sufficiently complicated that solutions to Maxwell's equations cannot .... Lines of magnetic flux always occur in closed loops; lines of electric field ..... to take additional derivatives of the equations, since this allows us to construct separat...

Could you tell me how the magnetic fields contain the plasma and ...

www.euro-fusion.org/faq/could-you-tell-me-how-the-magnetic-fields-contain-the-plasma-and-how-these-fields-are-set-up-and-powered/

By setting up magnetic field lines toroidally around the interior of the tokamak, the ions and electrons in the plasma are forced to travel tightly around these field ...

Constructing the Coronal Magnetic Field by Correlating ...

solarscience.msfc.nasa.gov/papers/garyga/StretchingPaper.pdf

region cannot be obtained since there is no closed form solution for the non-force -free, ... magnetic field lines originate in a high-beta plasma region,. > 1, in .... region field and the plasma it contains, by reconstructing the coronal field using a novel ... field only) is not sufficient to produce the active region corona. The r...

A Model of Solar Flares - SAO/NASA Astrophysics Data System

adsabs.harvard.edu/full/1968IAUS...35..471S

At low heights, the magnetic-field lines are closed but, at sufficiently great heights , the ... Since a flare seems to occur in the chromosphere and corona, and has no ... If we now consider a simple bipolar magnetic region and construct a field ... yet the associated magnetic field certainly contains 'free energy', which can be...

electromagnetism - Does a magnetic field do work on an intrinsic ...

physics.stackexchange.com/questions/10565/does-a-magnetic-field-do-work-on-an-intrinsic-magnetic-dipole

May 30, 2011 ... Is it correct to say that magnetic fields DO do work, but only on pure dipoles (not on ... But I thought that maybe since the formula for the force on a dipole F ... You can construct a pure magetic dipole from a vanishingly small current loop. ..... so a body moving in an external magnetic field cannot gain energy.

Coronal Magnetic Field Equilibrium with Discrete Flux Sources

adsabs.harvard.edu/full/1995SoPh..161..289L

In the corona, both ends of magnetic field lines in closed regions are rooted in the ... with only r-dependence, inevitably develops both r and 9 dependence when ..... However, such solutions contain unphysical singularities, since the energy ..... to a constant-a field (with, for example, a = 0.1) cannot be obtained by footpoint ....

Magnetic Fields a new theory - The Physics of Bruce Harvey

bearsoft.co.uk/MagF2.html

A not too mathematical look at some of the properties of magnetic fields and ... Faraday, Faraday's law, magnetic flux, energy density flux, magnetic energy density flux ... have used to construct wonderful technologies are just the by products of the ... When we try to calculate the number of lines of force which surround the ...

Geometrical properties of threedimensional reconnecting magnetic ...

onlinelibrary.wiley.com/doi/10.1029/JA093iA08p08583/pdf

Aug 1, 1988 ... question of how magnetic field lines lie in realistic three- dimensional ... that an ideal plasma cannot tolerate an electric field, so it ... Since the evolution of the magnetic field depends .... continuous behavior of the field line organization contains ... similar to the dynamics of a closed field line only if the e...

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Electric Field Lines - The Physics Classroom

www.physicsclassroom.com

Since electric field is a vector quantity, it can be represented by a vector arrow ... Not only does the density of lines surrounding any given object reveal ... Consequently, the lines representing the field cannot cross each other at any given location in space ... But what if a region of space contains more than one point charge?

Is the electric field real or only a theory? - ResearchGate

www.researchgate.net

Jan 24, 2014 ... Since in this concept, nothing is leaving the charged particle, there is nothing ... The electric field has energy to be able to exerts a force on another charged object. ... In a general dynamic case they cannot even be measured (only the ... See the first chapter in my textbook "Electromagnetic Field Theory"...

Electric and Magnetic Forces - MIT

web.mit.edu

Electromagnetic forces determine all essential features of charged particle acceleration and ... Electric and magnetic fields are often visualized as vector lines since they ... can be neutralized by adding particles of opposite-charge sign, leaving only .... The Lorentz force law contains all the information on the electromagnetic ...