Does a magnetic field occupy space?

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SUMMARY

Magnetic fields do occupy space, as they are vector fields with energy density that vary in direction and magnitude. While they are composed of non-massive particles known as photons, which act as carriers of the electromagnetic force, this concept is more advanced than typical freshman physics. The distinction lies in the fact that magnetic fields can superimpose in the same location, unlike physical objects such as bricks. Understanding the relationship between magnetic fields and electric fields through Lorentz transformations is essential for deeper insights into electromagnetism.

PREREQUISITES
  • Understanding of vector fields
  • Basic knowledge of electromagnetic theory
  • Familiarity with photons as force carriers
  • Concepts of energy density in physics
NEXT STEPS
  • Study Lorentz transformations in electromagnetism
  • Explore the relationship between electric and magnetic fields
  • Learn about the superposition principle in physics
  • Investigate the concept of energy density in vector fields
USEFUL FOR

Students in physics, particularly those studying electromagnetism, educators teaching advanced concepts, and anyone interested in the fundamental properties of magnetic fields.

rabcdred
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Homework Statement


Do magnetic fields occupy space?


Homework Equations





The Attempt at a Solution


I think the answer is no but I am having a terribly difficult time explaining why. All I have seen online is that like light, the magnetic field is composed of non-massive particles that act like an electromagnetic wave. Please provide me with a better explanation that this. Cheers.
 
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Short answer is yes.

Magnetic fields are really Electric fields under a lorentz transformation. Don't worry about that now, when you take an upper level E&M course you'll learn about the connection between special relativity and magnetism.

The particles you're referring to are photons, and they are the "carriers" of the electromagnetic force, but that is a little advanced for a freshman physics course I think. The short answer is, magnetic fields are vector fields which posses an energy density, and thus occupy space.
 
The question is rather vague. Yes there has to be some space otherwise you can't even define them. They point in a particular direction, and they vary from one place to another. You can even say that the field lines repel each other, but that would be a bit colloquial.

But they DON'T occupy space in the sense that bricks do. You can't put two bricks in one place, but you can superimpose two magnetic fields in the same place to get a total magnetic field.
 

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