MAGNETIC FIELD

Magnetization (MAGNETOSTATIKA)

Objects that can attract iron called MAGNET.

Various kinds of magnets, among other things:

horseshoe magnet magnet magnet needle

Magnets can be obtained by artificial means.

If steel rub with a magnet, and a way of rubbing in a fixed direction, then it will be a magnet steel.

Steel or iron can also dimagneti by electric current.

Steel or iron was put into a coil of wire, and then into the electrified wire coil in the same direction. The ends of a magnet called the Magnetic Pole. Line connecting the poles of a magnet are called magnetic axis and the line perpendicular to the axis of the magnet and the magnet bisect a line called the axis.

A magnet hung in EAM. After equilibrium is reached, it turns bar magnet poles were facing north and south.

Magnetic poles facing north called North Pole.

Magnetic poles facing the South is called the South Pole.

The same thing can be encountered on the magnetic needle can rotate on the vertical axis (needle declination).

Arctic needle magnetic declination of a balanced approached the North pole magnet, the magnetic North Pole apparently contradictory needle. When it is brought near the south pole of the bar magnet, the magnetic north pole needle interested.

Conclusion: similar poles repel and poles are not similar attraction

If we hang some spikes on the ends of a bar magnet turns the number of spikes that can be attached at both magnetic poles just as much. The more to the center, the less the number of spikes that can be attached.

Conclusion: The strength of the magnetic poles of equal magnitude to the middle of the diminishing strength.

Coulomb's law.

Definition: The amount of repulsion or attractive forces between magnetic poles, strong poles proportional to each and inversely proportional to the square of the distance.

F = force of attraction / repel force in newtons.

R = distance in meters.

m1 and m2 strong magnetic poles in Ampere-meter.

 0 = permeability of vacuum.

Value = 107 Weber / A.m

Permeability value objects, it is not the same as the vacuum permeability.

Comparison between the permeability of a substance called vacuum permeability debgan relative permeability properties of matter.

 r

 r = relative permeability of a substance.

  = Permeability of matter

 0 = permeability of vacuum.

UNDERSTANDING THE MAGNETIC FIELD.

The magnetic field is the space around the magnetic poles, the gravity / magnetic departure is perceived by others.

Strong field (H) = ITENSITY.

Strong magnetic field at a point in the magnetic field is strong the force on a unit pole at that point in the magnetic field is strong m poles that cause magnetic field in Ampere-meter. R distance from the magnetic pole to the point in question in meters. and H = field strength in point: or in

The line style.

The line styles are: Trails in the North pole or the magnetic field lines to form such a strong field at each point is expressed by the tangent.

In line with this ideology, the lines of force out of the poles and into the South Pole. To create a pattern of lines of force can be by way of sprinkling iron filings around a magnet.

Draw the pattern lines of force.

Meeting Outline Style (FLUX DENSITY) = B

Definition: The number of lines of force per unit area perpendicular to the field strength.

Strong magnetic field at a point comparable to meeting the lines of force and inversely proportional to the permeability.

 B = meeting of the lines of force.

  = Permeability of matter.

 H = Strong magnetic fields.

note: meeting the lines of force magnetic induction states greatness.

Magnetic field lines of force meetings referred to: the magnetic field is uniform (homogeneous)

When meeting the lines of force in a homogeneous field B, the number of lines of force () which pierces the pants A m2 and flank angles with the field strength is: = BA Sin Satuanya: Weber.

Diamagnetic And The Magnetic.

With respect to the properties of magnetism and diamagnetic objects distinguished on the magnetic.

Magnetic objects: when placed in a magnetic field is not homogeneous, it ends experiencing a repulsive force so things will take a position perpendicular to the field strength. Such objects have a relative permeability values ​​less than one. Example: Bismuth, copper, gold, antimony, glass flinta.

Paramagnetic objects: when placed in a magnetic field is not homogeneous, it will take a position parallel to the direction of the field strength. Such objects have a relative permeability greater than one. Examples: Aluminum, platinum, oxygen, copper sulphate and more metal salts are paramagnetic substances.

Ferromagnetic objects: Objects that have a magnet effect a very large, very strongly drawn by a magnet and has a relative permeability up to several thousand. Example: Iron, steel, nickel, cobalt and certain alloys (almico)