- #1
A.M.K
- 14
- 0
Hello
I am new in this forum and also my knowledge on physics is not very good.
Now i am trying to understand how the permanent magnets work. We know that if we take ferromagnetic materials and by doing a specific process we can create a magnet. Then by subjecting the magnet into a high electromagnetic fields the magnet becomes permanent magnet. Correct?
Also, according to my findings on the web everyone says that the permanent magnets cannot be assumed as a source of energy, and my question is why?
When we create a magnet we have to put some energy in order to make the magnet material permanent magnet, so where does this energy goes? Why after the magnetization the permanent magnet offers "infinitely" magnetic field? Does this magnetic field is the energy (i.e. magnetic energy) from permanent magnet? if yes how comes the magnet is not assumed to be a source of energy...
However, up to this point i make a very simple example in my mind which is probably wrong but is what i see in reality. So i relate a conventional rechargeable battery with a "permanent magnet". So, a fully charged battery is assumed to be a source of energy (i.e. electrical energy) so it can be used in a lot of applications, but when the battery is discharged we have to recharged it in order to use the battery again. In addition, we know that a "permanent magnet" at some point in time its magnetic intensity (or magnetic properties) becomes weaker or may be close to zero, therefore the magnet has to be re-magnetized in order to be able to used it again.
So, from the above the above example i can obtain that a rechargeable battery and a "permanent magnet" have more or less the same function, i.e. charged and discharged. So why the permanent magnets can not be assumed as a source of let say magnetic energy, what is the mathematical proof for that?
I am getting confused with that , and when i try to answer one question to myself and another questions arise...
So, is there any very good book that i go and buy which it can explain to me this subject? OR is there any good sources like web links or anything that i can look at it?
Thanks in advance for your time.
Kind regards
A.M.K
I am new in this forum and also my knowledge on physics is not very good.
Now i am trying to understand how the permanent magnets work. We know that if we take ferromagnetic materials and by doing a specific process we can create a magnet. Then by subjecting the magnet into a high electromagnetic fields the magnet becomes permanent magnet. Correct?
Also, according to my findings on the web everyone says that the permanent magnets cannot be assumed as a source of energy, and my question is why?
When we create a magnet we have to put some energy in order to make the magnet material permanent magnet, so where does this energy goes? Why after the magnetization the permanent magnet offers "infinitely" magnetic field? Does this magnetic field is the energy (i.e. magnetic energy) from permanent magnet? if yes how comes the magnet is not assumed to be a source of energy...
However, up to this point i make a very simple example in my mind which is probably wrong but is what i see in reality. So i relate a conventional rechargeable battery with a "permanent magnet". So, a fully charged battery is assumed to be a source of energy (i.e. electrical energy) so it can be used in a lot of applications, but when the battery is discharged we have to recharged it in order to use the battery again. In addition, we know that a "permanent magnet" at some point in time its magnetic intensity (or magnetic properties) becomes weaker or may be close to zero, therefore the magnet has to be re-magnetized in order to be able to used it again.
So, from the above the above example i can obtain that a rechargeable battery and a "permanent magnet" have more or less the same function, i.e. charged and discharged. So why the permanent magnets can not be assumed as a source of let say magnetic energy, what is the mathematical proof for that?
I am getting confused with that , and when i try to answer one question to myself and another questions arise...
So, is there any very good book that i go and buy which it can explain to me this subject? OR is there any good sources like web links or anything that i can look at it?
Thanks in advance for your time.
Kind regards
A.M.K