Do magnetic fields tend to align? (moving charge & other B)

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SUMMARY

The discussion clarifies that a moving proton's magnetic field does not naturally align with an external magnetic field. Instead, the magnetic field at any point is the vector sum of all magnetic field contributions, including that of the moving proton, which can be calculated using Maxwell's equations based on the proton's speed, direction, and charge. While the external magnetic field does not influence the proton's magnetic field, it affects the proton's movement. In quantum mechanics, measurement along the external magnetic field direction can cause the proton's spin to align or anti-align with that field.

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  • Understanding of Maxwell's equations
  • Knowledge of classical and quantum mechanics
  • Familiarity with magnetic fields and their properties
  • Basic concepts of particle physics, specifically protons
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  • Study Maxwell's equations in detail
  • Explore the effects of magnetic fields on charged particles
  • Investigate quantum mechanics principles related to spin and measurement
  • Learn about the behavior of protons in various magnetic environments
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Physicists, students of physics, and anyone interested in the interactions between moving charges and magnetic fields, particularly in classical and quantum contexts.

gauss44
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When a moving proton travels through a magnetic field, doe's it's magnetic field (that it's giving off) naturally align with the outside magnetic field (due to a magnet or something in the environment)?
 
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gauss44 said:
When a moving proton travels through a magnetic field, does its magnetic field (that it's giving off) naturally align with the outside magnetic field (due to a magnet or something in the environment)?

No. The magnetic field at any given point will be the vector sum of all the contributions from all of the sources of magnetic fields in the area. The magnetic field of the moving proton is just one of these contributions; it can be calculated from Maxwell's equations using the only the speed, direction, and charge of the proton.

Although the external magnetic field doesn't affect the proton's magnetic field, it does affect the proton's movement.
 
In classical physics, no. But in quantum mechanics, this depends on what kind of measurement you make. If you measure along the direction of the external magnetic field, then the proton spin will suddenly become aligned or anti-aligned with the field.
 

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