25 Facts About Magnetic field

Magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

Magnetic field forces give information about the charge carriers in a material through the Hall effect.

The first is the electric Magnetic field, which describes the force acting on a stationary charge and gives the component of the force that is independent of motion.

The Magnetic field is defined by the Lorentz force law and is, at each instant, perpendicular to both the motion of the charge and the force it experiences.

The -Magnetic field is measured in amperes per metre in SI units, and in oersteds in cgs units.

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For instance, electrons spiraling around a Magnetic field line produce synchrotron radiation that is detectable in radio waves.

Magnetic field lines are like streamlines in fluid flow, in that they represent a continuous distribution, and a different resolution would show more or fewer lines.

Magnetic field "lines" are visually displayed in polar auroras, in which plasma particle dipole interactions create visible streaks of light that line up with the local direction of Earth's magnetic field.

In ferromagnetic substances like iron and in plasmas, magnetic forces can be understood by imagining that the field lines exert a tension, along their length, and a pressure perpendicular to their length on neighboring field lines.

The magnetic field produced by the magnet then is the net magnetic field of these dipoles; any net force on the magnet is a result of adding up the forces on the individual dipoles.

The -Magnetic field, therefore, is analogous to the electric Magnetic field, which starts at a positive electric charge and ends at a negative electric charge.

The direction of such a magnetic field can be determined by using the "right-hand grip rule" .

Formulas derived for the magnetic field above are correct when dealing with the entire current.

Magnetization vector Magnetic field represents how strongly a region of material is magnetized.

The term magnetism describes how materials respond on the microscopic level to an applied magnetic field and is used to categorize the magnetic phase of a material.

For non-dispersive materials, this same energy is released when the magnetic field is destroyed so that the energy can be modeled as being stored in the magnetic field.

Similar to the way that a changing magnetic field generates an electric field, a changing electric field generates a magnetic field.

Similarly, the energy stored in a magnetic field is mixed with the energy stored in an electric field in the electromagnetic stress–energy tensor.

In modern physics, the electromagnetic field is understood to be not a classical field, but rather a quantum field; it is represented not as a vector of three numbers at each point, but as a vector of three quantum operators at each point.

Earth's magnetic field is produced by convection of a liquid iron alloy in the outer core.

However, because a magnetic pole is attracted to its opposite, the North Magnetic Pole is actually the south pole of the geomagnetic field.

Earth's magnetic field is not constant—the strength of the field and the location of its poles vary.

The ability of the three-phase system to create a rotating Magnetic field, utilized in electric motors, is one of the main reasons why three-phase systems dominate the world's electrical power supply systems.

Magnetic field articulated the principle that magnets always have both a north and south pole, no matter how finely one slices them.

In 1831, Michael Faraday discovered electromagnetic induction when he found that a changing magnetic field generates an encircling electric field, formulating what is known as Faraday's law of induction.

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