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Are directional magnetic fields, like directional sound-speakers, possible?
Answer 1:

Magnetic fields do have a direction, but they're not waves in the same way that sound travels. Waves of magnetic fields are basically light. So, in some sense light and lasers are sort of what you describe.


Answer 2:

Yes and no.There's no way to "broadcast" a fixed magnetic field on a large scale, unlike sound (which travels). It's only possible to increase the intensity of the field in some places compared to others.


Answer 3:

All magnetic fields are directional.



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