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Long Island man wearing 9kg-metal necklace dies after being sucked into MRI machine
(www.independent.co.uk)
this post was submitted on 21 Jul 2025
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It's not an electromagnet, it's a superconducting magnet. And turning it immediately off makes it melt.
It's both! MRI magnets are electromagnets that are cooled down to 4 Kelvin using liquid helium. Once they reach those low temperatures, they become superconducting. This way, the magnet isn't gobbling up tons of electricity to stay at the desired field strength. Instead, the liquid helium needs to be replenished occasionally to keep it at superconducting temperature. Source: I work with MRI scanners.
TIL, thanks