In this session we are going to deal with the another types of magnets they are
1.natural (permanent magnets ) and 2. artificial magnets (temporary magnets).
1. Natural magnets: these are the naturally occurring magnets from the earths core,mantle in the form of ores of some metals like iron,cobalt,nickel,and some other rare earth metals like gadolinium,dysprosium etc...
methods to demagnetize a magnet whether it is a temporary or permanent are 1.heating
2.rough handeling 3. by induction 4.and by passing electricity these are the methods to be followed to de magnetize a magnet..
2. Artificial magnets:these are the magnets which are prepared by using natural magnets or without ,which can attract the magnetic material...these magnets can be prepared by some methods they are 1.single touch method.2.double touch method 3.by using electricity to the materials..
1.single touch method: in this method the material going to be magnetized is need to be rubbed by the magnet in the one direction in order to bring the dipoles in the position to attract the other materials...in this method the magnetising material need to be rubbed with a natural permanent magnets..
2.double touch method: in this method the material need to be magnetized in such a way that from the middle of the material to the ends with two different magnets which are need to be placed with the opposite poles.
3.Electromagnets: in this method appropriate material is choosed and it is magnetized by the usage of current in such a way that for a electrical vector there exists a magnetic vector perpendicular to it..
all these methods produces the temporary magnets only but not the permanent....
properties of a magnet: there are six propeties of a magnet they are
1.it attracts magnetic substances
2.it points north-south direction when suspended freely
3.repulsion is sure test for magnetisation
4.poles of the magnets are always paired there donot exists a mono pole in magnets
5.similar poles of magnets repel each other
6.magnetic force can eaisly passes through non magnetic materials...
all the artificial magnets satisifies these propeties for a short time where as the permenant magnets shows the through out they exist,.
some other topics can be learned through supersscience.blogspot.com.....keep going with this blog...........
1.natural (permanent magnets ) and 2. artificial magnets (temporary magnets).
1. Natural magnets: these are the naturally occurring magnets from the earths core,mantle in the form of ores of some metals like iron,cobalt,nickel,and some other rare earth metals like gadolinium,dysprosium etc...
methods to demagnetize a magnet whether it is a temporary or permanent are 1.heating
2.rough handeling 3. by induction 4.and by passing electricity these are the methods to be followed to de magnetize a magnet..
2. Artificial magnets:these are the magnets which are prepared by using natural magnets or without ,which can attract the magnetic material...these magnets can be prepared by some methods they are 1.single touch method.2.double touch method 3.by using electricity to the materials..
1.single touch method: in this method the material going to be magnetized is need to be rubbed by the magnet in the one direction in order to bring the dipoles in the position to attract the other materials...in this method the magnetising material need to be rubbed with a natural permanent magnets..
2.double touch method: in this method the material need to be magnetized in such a way that from the middle of the material to the ends with two different magnets which are need to be placed with the opposite poles.
3.Electromagnets: in this method appropriate material is choosed and it is magnetized by the usage of current in such a way that for a electrical vector there exists a magnetic vector perpendicular to it..
all these methods produces the temporary magnets only but not the permanent....
1.it attracts magnetic substances
2.it points north-south direction when suspended freely
3.repulsion is sure test for magnetisation
4.poles of the magnets are always paired there donot exists a mono pole in magnets
5.similar poles of magnets repel each other
6.magnetic force can eaisly passes through non magnetic materials...
all the artificial magnets satisifies these propeties for a short time where as the permenant magnets shows the through out they exist,.
some other topics can be learned through supersscience.blogspot.com.....keep going with this blog...........
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