The magnetic component of electromagnetism

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SUMMARY

The discussion centers on the relationship between electricity and magnetism, specifically addressing whether a magnetic field can exist without electricity. It is established that while lodestone demonstrates magnetism independent of electricity, magnetism cannot exist without an electric field. The conversation also explores the concept of electromagnetic standing waves and their characteristic frequencies, emphasizing that knowledge of one component (electric or magnetic) can inform understanding of the other in a vacuum, but this is not as straightforward in materials.

PREREQUISITES
  • Understanding of electromagnetism principles
  • Familiarity with electromagnetic standing waves
  • Knowledge of material properties affecting electromagnetic fields
  • Basic concepts of electric fields and magnetic fields
NEXT STEPS
  • Research the properties of lodestone and its magnetic characteristics
  • Learn about electromagnetic standing waves and their applications
  • Explore the interaction between electric fields and magnetic fields in various materials
  • Study the principles of electromagnetism in a vacuum versus in materials
USEFUL FOR

Students and professionals in physics, electrical engineering, and materials science who seek to deepen their understanding of the interplay between electricity and magnetism.

Edward Block
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May a magnetic field exist w/o electricity? Yes, as lodestone shows us but where is the electricity? Electricity generates magnetism with it. So where is the electricity with lodestone?
 
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Also, if the wavelength of the electromagnetic standing wave yields a particular characteristic frequency(HZ), does this characterize both the electrical and the magnetic component? In other words, do we ascribe Hz to the magnetic component and use that to characterize the magnetic field created?
 
You can have magnetism without electricity, but you won't find magnetism without an electric field. They're attached at the hip.

In a vacuum knowing the properties of one or the other component of electromagnetism tells you what you need to know about the other, though you need more than the frequency to do it. In materials, not so much. (Edit: Unless you know everything you need to know about the material, I suppose.)
 

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