Is it true that magnets forced into opposition lose magnetic their force?

[wmingin]

Good morning wise friends!

Its a cold morning here in southern New Jersey, my Labrador Retreiver (Mocha) is at my feet and we're expecting snow tomorrow. (I love snow, makes me appreciate the spring!)

O.K., the question.

I have heard that two permanent magnets clamped together N to N or S to S will lose their magnetic power. Is this true, and can anyone explain why?

If true, does the same effect occur when the magnets are placed in attraction mode?

May you all have good health and happiness always...

Bill

 

[Neo_Anderson]

Good morning wise friends!

Its a cold morning here in southern New Jersey, my Labrador Retreiver (Mocha) is at my feet and we're expecting snow tomorrow. (I love snow, makes me appreciate the spring!)

O.K., the question.

I have heard that two permanent magnets clamped together N to N or S to S will lose their magnetic power. Is this true, and can anyone explain why?

If true, does the same effect occur when the magnets are placed in attraction mode?

May you all have good health and happiness always...

Bill

Clamping two magnets together won't degrade their magnetizm. Evidence: the magnetizm of the permanent magnets in electric motors never lose their magnetizm, even though they are subject to constant and repeated magnetic opposition forces (torque). Also, in diamagnetism, the magnet in situ is exposed to a continuous repulsion, yet a permanent magnet's ability to attract like-magnets is never diminished with respect to time (assume Curie temperature is never reached).

Two magnets placed in "attraction mode" is the same thing as taking a single magnet and breaking it in half.

 

[astrokreng]

Good morning Bill,

Thank you for your interesting question about magnets and their magnetic force. It is a common belief that when two magnets with the same polarity (N to N or S to S) are forced into opposition, they lose their magnetic force. However, this is not entirely true.

Magnets do not lose their magnetic force when they are forced into opposition. What actually happens is that the magnetic fields of the two magnets cancel each other out, resulting in a weaker overall magnetic field. This is because the magnetic field lines of the two magnets are in opposite directions and cancel each other out.

The same effect does not occur when the magnets are placed in attraction mode (N to S). In this case, the magnetic field lines of the two magnets combine and strengthen each other, resulting in a stronger overall magnetic field.

I hope this explanation helps to clarify any misconceptions about magnets losing their magnetic force when forced into opposition. Enjoy the snow with Mocha and have a great day!