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A comment on First Cable-Free Elevator Zooms Horizontally and Vertically Using Maglev Tech. Parent comment

Re:First Cable-Free Elevator Zooms Horizontally and Vertical... by rrobukef on Monday June 26, 2017 @05:49AM (#14635424)
Only half of the setup are electro magnets. The other half are permanent. If the elevator falls the permanent magnets will induce the coils.
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