What is a negative magnetic moment?

In summary, a negative magnetic moment refers to the direction of the magnetic field produced by a magnetic object or particle. It is measured in units of magnetons or energy divided by magnetic field, and is caused by the alignment of electrons within an atom or molecule. It can be changed by altering the orientation of the magnetic field and examples of objects with a negative magnetic moment include atoms, molecules, and subatomic particles.
  • #1
zincshow
104
0
Protons have a magnetic moment of 2.8 μN, Neutrons have a magnetic moment of −1.9 μN.

What is the meaning of the negative sign? Does the Neutron go a different direction in a magnetic field? How do they know it isn't just upside down? Is there any kind of a visual picture of a magnet that would help someone understand the difference between a positive and a negative magnetic moment?
 
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  • #2
I'm a bit rusty, but I think the negative sign means it's anti-aligned with the angular momentum. (Or vice versa.)
 

1. What is a negative magnetic moment?

A negative magnetic moment refers to the direction of the magnetic field produced by a magnetic object or particle. In other words, it indicates the orientation of the magnetic poles, where the north pole is considered positive and the south pole is considered negative.

2. How is a negative magnetic moment measured?

A negative magnetic moment is typically measured in units of magnetons, which is a unit of magnetic moment. It can also be measured in units of energy divided by magnetic field, such as electron-volts per Tesla (eV/T).

3. What causes a negative magnetic moment?

In most cases, a negative magnetic moment is caused by the alignment of electrons within an atom or molecule. When these electrons have opposite spin directions, they create an overall negative magnetic moment for the atom or molecule.

4. Can a negative magnetic moment be changed?

Yes, a negative magnetic moment can be changed by altering the orientation of the magnetic field. This can be achieved through external forces, such as an applied magnetic field, or by changing the temperature or pressure of the system.

5. What are some examples of objects with a negative magnetic moment?

Some common examples of objects with a negative magnetic moment include atoms, molecules, and subatomic particles such as electrons and protons. These objects have a negative magnetic moment due to the alignment of their internal magnetic fields.

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