Permeability of Iron: How Does It Affect Electromagnets?

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    Iron Permeability
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Iron enhances electromagnets by increasing the strength of the magnetic field due to its high permeability, allowing magnetic field lines to penetrate more effectively. When a magnetic field enters iron, it is indeed slowed down compared to its speed in a vacuum, and the field lines interact with the material, creating a stronger overall magnetic effect. At lower frequencies, iron reflects incoming magnetic waves, which is relevant in applications like stealth technology. The reflection and propagation of electromagnetic waves in iron depend on the material's conductivity, with most high-frequency waves being reflected rather than transmitted. Understanding these dynamics is crucial for applications in electromagnetism and related technologies.
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I know I change my mind often but hear me out on this. I'm changing back to iron core solenoids, but the frequency will be lower. So how high of a frequency can you have before it just reflects off the iron?

And yes, I do change my mind, but that is only in response to changing information. That's just science at work.
 

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