Discover the Power of Focusing and Directing Magnetic Fields | BBC Video

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The discussion centers on a brief BBC video that highlights a material capable of focusing and concentrating electromagnetic fields. Participants express curiosity about this substance, noting the challenge of finding additional information online. It is mentioned that materials with high magnetic permeability, such as Mu-metal, are effective in this application. The conversation reflects a desire for further insights into the properties and uses of such materials. Overall, the topic emphasizes the intriguing potential of materials that manipulate magnetic fields.
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Okay I was trolling youtube (I know its a horrible habit I have that keeps me from sleeping at night) and I came across this BBC video. Its only 47 seconds but it BRIEFLY describes a material that can Focus and concentrate electromagnetic fields and I can't find anythng else on the web, any imput guys and gals on this substance? I am not even sure where to post this to be honest.

Youtube "Concentrating and Directing Magnetic Fields" I didnt want to post the link.
 
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Anything with a high magnetic permeability works, like Mu-metal.
 

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