Magnetic

Energy stored in magnetic fields main seeAlso Energy is needed to generate a magnetic field both to work against the electric field that a changing magnetic field creates and to change the magnetization of any material within the magnetic field.

Magnetic bottles This image shows how a charged particle will corkscrew along the magnetic fields inside a magnetic bottle, which is two magnetic mirrors placed close together.

Magnetic flux The magnetic flux density ( magnetic field ) having the unit Wb/m 2 ( Tesla ) is denoted by B, and magnetic flux is defined analogously: : with the same notation above.

It revealed a change in the microscopic structure when magnetic spirals that are aligned along a magnetic field drift away from it when the magnetic field increases.

Adiabatic invariance The properties of magnetic mirrors can be derived using the adiabatic invariance of magnetic flux under changes in magnetic field strength.

Chapter 9 discusses magnets and their magnetic fields using the concept of magnetic poles, but it also gives evidence that magnetic poles do not really exist in ordinary matter.

Construction of a magnetic compass Magnetic needle A magnetic rod is required when constructing a compass.

Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments.

Gauss ordered a magnetic observatory to be built in the garden of the observatory, and with Weber founded the "Magnetischer Verein" (magnetic club in German ), which supported measurements of Earth's magnetic field in many regions of the world.

If an object has a certain magnetic flux over its surface area, and that area shrinks to a smaller area, but the magnetic flux is conserved, then the magnetic field would correspondingly increase.

In contrast with this behavior, diamagnetic materials are repelled by magnetic fields and form induced magnetic fields in the direction opposite to that of the applied magnetic field.

In theory, it is possible for a magnetic sail to launch directly from the surface of a planet near one of its magnetic poles, repelling itself from the planet's magnetic field.

Low temperature superconductivity Magnetic Resonance Imaging (MRI) and Nuclear Magnetic Resonance (NMR) The biggest application for superconductivity is in producing the large volume, stable, and high magnetic fields required for MRI and NMR.

Magnetic and electric multipoles In order to find theoretically the deuterium magnetic dipole moment µ, one uses the formula for a nuclear magnetic moment : with : g (l) and g (s) are g-factors of the nucleons.

Magnetic coupling Inductive coupling or magnetic coupling (MC) occurs when a varying magnetic field exists between two parallel conductors typically less than a wavelength apart, inducing a change in voltage along the receiving conductor.

Magnetic domains can be observed with a magnetic force microscope to reveal magnetic domain boundaries that resemble white lines in the sketch.

Magnetic field and electric currents Currents of electric charges both generate a magnetic field and feel a force due to magnetic B-fields.

Magnetic field lines would start or end on magnetic monopoles, so if they exist, they would give exceptions to the rule that magnetic field lines neither start nor end.

Magnetic field main The main part of Earth's magnetic field is generated in the core, the site of a dynamo process that converts kinetic energy of fluid convective motion into electrical and magnetic field energy.

Magnetic force Magnetic lines of force of a bar magnet shown by iron filings on paper main The phenomenon of magnetism is "mediated" by the magnetic field.