Magnetic Viewing Paper - Featured on Hacked Gadgets
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I think I get it now. The reason one would use such a complicated electromagnet to magnetize the ferrite rather than mold or mill the part to shape and use a simpler electromagnet to get the same magnetic field is that milling is crazy slow and resource-intensive, and sintering just doesn't allow such mold shapes.
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Yep, it's called cogging. Every one of the "teeth" made visible by the powdered iron in the magnetic film has a north and a south pole on either side. Without this special magnetization pattern the thing would never work.
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I had no clue those noises were made by something so pretty...
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And rhenium.
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Wast ist das? eine HARDDISK scheibe?
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Cool see whats in the magnet
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magzzie, it will only show magnetically affected thigs, so most likely, the three common metals that are affected by magnets. i cant remember all 3, just iron.
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nope to see what people are wearing
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I'd imagine this is a servo magnet from a 5.25" floppy disk drive, looking at the pattern.
douro20 2 years ago 3
its iron, nickel & cobalt
gbatime 4 years ago 3