magnetic field
because the magnet causes particles called electrons in the atoms of the nail to align along the magnet's lines of force. The atoms with aligned electrons then act like tiny bar magnets themselves.
The space around a magnet where its magnetic effect can be felt is known as the magnetic field. It is a region where magnetic forces act on other magnetic materials or moving charges. The strength of the magnetic field decreases with distance from the magnet.
not always as the south pole of a magnet is magnetic yet it repels another south pole. :D
a line to represent the direction of a region around a magnetic material or a moving electric charge within which the force of magnetism acts.A2. Perhaps better describes as lines of magnetic force. These are lines of equal intensity between the North and South pole of a magnet. They are similarly charged, hence they repel each other. They extend arbitrarily far into space if allowed to, and will eventually form a sphere.These lines of magnetic force are that along which your compass aligns itself at your locale.
When an iron piece is quite away from the magnet ,i.e, not present in magnetic field of the magnet then the iron piece is in neutral state ,i.e, there is no north & south pole . But , as soon as the iron piece interacts with magnetic field of magnet ,i.e, near to the magnet then the north pole of magnet make the nearer part or end of the iron piece south pole & simultaneously other part of iron becomes north pole . Similarly if south pole of the magnet interacts with iron piece then that end/part becomes north pole & other end becomes north pole . Now this iron piece has north & south pole .So iron piece is now converted into magnet which can attract other iron pieces in similar way as explained before .
A Magnetic Force
Some forces do not involve physical contact between the bodies on which they act. They act through the space between them. Such forces are called Non-Contact Forces or Action-at-a Distance Force. They are of three types, namely, magnetic force, electrostatic force and gravhtational force. Magnetic Force -- The forces which a magnet exerts on iron objects is called magnetic forces. Electrostatic Force -- The force which result due to the repulsion of similar charges or attraction of opposite charges is called electrostatic force. Gravitational force -- The force by which Earth pulls the objects towards its centre is called gravitational force.
The space around a magnet where the force of the magnet can act is the space occupied by the magnetic field. Alternatively we say that the magnetic field acts in the space around a magnet. That is a very qualitative statement with little predictive value. More predictive value is contained in a statement that the strength of the magnetic field at any position in the vicinity of a magnet is measured by the torque which is exerted on a small magnet moment (compass) place in the vicinity of a magnet. This, recorded with the direction the test compass points is actually a mapping of the magnetic field of a magnet. As a side note, if carefully measured one discovers that strength of the field around a magnet decreases as the inverse cube of the distance when far from the magnet. The field is mostly in the volume near the magnet but the weakening field continues to exist at all distances from the magnet.
magnetic field
The volume surrounding a magnet will be filled with the lines of magnetic force. Since these are similarly polarized, they repel each other - eventually creating a sphere at a sufficiently large distance. This sphere is the magnetic field of that magnet.
Electric and gravitational force can act through "empty" space.
They can both attract, or can repel, they can both act over a distance.
This would be the magnetic field.
magnetic pull
A magnet can act from a distance because it creates a magnetic field around itself, which exerts a force on other magnetic materials within its field. This force can attract or repel other magnets or magnetic materials without physical contact.
A Magnetic Force
A magnet is something that produces a magnetic field and has two poles. The two poles are opposite and opposing e.g north and south or positive and negative. This is why if you hold two bar magnets together their will attract when north/south or positive/negative face each other or push away from each other. A magnetic field...that's a hard one to explain. Now the attraction between the two magnets together and causes them to move towards each other is a force. A field is how this force will act over a given space. e.g. The magnetic force will be weaker, the further away from the magnet you move.