what happens if two like poles of a magnet are placed next to each other
Magnetic Field,
The term magnetism comes from the region of Magnesia, a urban center in Western Turkey, where Greeks found lodestones, which attracted iron pieces beyond the space.�� It is also observed that, magnets attract as well as repel.� We can explain this dual nature of magnetic force by proposing that each magnet has two poles, north pole (N) and southward pole (S).� You will observe two things during the activities:
1) When two magnets are brought nearly each other, similar poles repel; opposite poles attract.
2) When a magnet is brought near a piece of iron, the iron also gets attracted to the magnet, and it acquires the same ability to concenter other pieces of iron.
We like to represent this force effect of a magnet on atomic number 26-like objects with a concept called magnetic field.� The concept of field can exist best understood if we think the gravitational strength of Earth on object nearly information technology.� We say that the mere presence of Earth sets up gravitational field in the surrounding space, and that we tin correspond this gravitational strength effect with lines starting from World and radially diverging away to infinity.
Moon is caught in Earth�due south field.� Likewise, the Astronaut in space walk is feeling the Earth�s gravity.� Space shuttle is too in the Globe�southward field. The reason why they don�t fall is beyond the scope of this course, simply I will explicate for completeness.� None of them fall towards World because they all take plenty horizontal speed to make effectually the Earth.� If you lot were able to horizontally throw a baseball game at xviii,000 mi/h, I would also brand around the Earth and render to you lot.� Therefore, we stand for the World�s attractive gravitational force with field lines.� The direction of field lines represent the direction of force a body would feel around Earth, and the density of field lines (how closely they are separated) represents the strength of the force.� For example, closer yous are to the Earth, stronger the force.
Similarly, a magnet sets upwards a magnetic field in its surrounding space in which it magnetically affects any other magnetic fabric.� The strength is represented by the density of the magnetic field lines.� Magnetic field lines are closed curves leaving from North pole and entering the South pole when you follow them on the outside the magnet.�
A compass, which is a small magnet itself, lines up parallel to the magnetic field lines at the point it is placed.� The tip of the arrow is the N magnetic pole, and its end is the South magnetic pole.
The building blocks of magnets are atoms, which are modest tiny magnets.� As far as the magnetism is concerned, we can view an atom as if it is a tiny compass/magnet, pointing to the north direction.� We will see subsequently that, the motion of electrons (moving electrical charge) is the fundamental reason of magnetism.� For applied purposes we can focus on a cluster of atoms, called magnetic domains that are aligned in a specific management.� Each domain may consist of billions of aligned atoms.� Nether normal weather, a magnetic textile like atomic number 26 doesn�t behave like a magnet because the domains don�t take a preferred direction of alignment.� On the other hand, the domains of a magnet (or a magnetized atomic number 26) are all aligned in s specific direction.� Domains are separated from the adjacent domains by domain walls.� In general, alignment inside a domain is the aforementioned for all atoms of that domain.� Yet, the atoms of one domain are aligned in a different management than the atoms of another domain.� This situation is sketched below for a magnetic material, a magnetized fabric, and for a nonmagnetic material.� A nonmagnetic material doesn�t accept any domain construction.
Domains can be induced into alignment.��� Consider a common iron nail.� Its domains are randomly oriented, like the commencement picture above.� If you bring a magnet is brought nearby, the domains of the iron blast will marshal in such a manner that, the north pole of iron domains volition face the south pole of the magnet, and visa versa.�
When you remove the magnet, the nail becomes permanent magnet for a while.� The thermal motion (retrieve the higher the temperature, the faster the atoms move) of atoms eventually may crusade nigh of the atoms to return to random orientation.� Also, by dropping a magnet, not merely will yous interruption it, but you will as well destroy the domain alignments.
Some other way of making a permanent magnet is to stroke a piece of iron (or iron shaving which yous will do equally an activity) with a magnet. Iron shaving comport like tiny magnets.�
Electromagnet:
A wire coils like the one shown in the picture beneath, can likewise produce magnetic field similar to that of a magnet.� If the inside if the coils is filled with a iron core, the magnetic field even gets stronger due to the additional magnetism from the fe.
Source: https://www.utm.edu/staff/cerkal/magnetic.htm
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