[Noisebridge-discuss] 1.4 T MRI magnets up for grabs

Jonathan Foote jtfoote at ieee.org
Wed Dec 7 08:54:42 PST 2011


Cool!

This is probably a Halbach array designed to concentrate an intense
field in a small area. Unlikely to attract knives from across the
room, but I'd be careful with that forklift.

While they should still be treated with respect, AlNiCo magnets are
about 20% as strong as the neodymium magnets responsible for thins
like this (warning, graphic picture as suggested by the URL)
http://gizmodo.com/5156490/guy-loses-a-chunk-of-his-finger-in-neodymium-magnet-accident-nsfw

And even those are not nearly as strong as the superconducting coils
used in MR imagers. If you want an entertaining few minutes, search
for "MRI accident" images.


On Tue, Dec 6, 2011 at 11:25 PM, Gopiballava Flaherty
<gopiballava at gmail.com> wrote:
> How do you move such an object? Once you put it in a car, can you get it out again? Do knives fly towards you from any room you bring it into?
>
> iirc, United Nuclear calls their big magnets the most dangerous items they sell.
>
> Thanks,
>
> gopi at iPhone
>
>
> On Dec 6, 2011, at 23:08, Michael Shields <shields at msrl.com> wrote:
>
>> From another list:
>>
>> -----
>> Could someone use really strong solid state magnets in an art project
>> for burning man or anything else?
>>
>>      material:  AlNiCo  (aluminum nickle cobalt)
>>      weight:  lots.   prob around or in excess of 1000 lbs per
>>      strength:   1.4 Tesla or 14,000 Gauss total.
>>      price:   free
>>      currently in a nuclear magnetic resonance machine
>>
>> They are going to be moved today, Dec 2, out of a house in Livermore,
>> that might be a good time to pick them up, I don't know when or if
>> there is a real deadline for collecting them.
>>      Contact Charlie at 415.819.8105 or cremsen at yahoo.com
>>
>> please disseminate, thanks!
>> -----
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