Post #1716875
2026-04-15 15:28 UTC
@andrewt fortunately it doesn't work this way: iron atoms are NOT ferromagnetic, this happens only in the bigger christalline structure. Otherwise MRI wouldn't be possible for humans, because hemoglobin is ~3% iron and your blood would pull at you very strongly...
Replies (1)
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@andrewt@mathstodon.xyz 2026-04-15 15:52
@kranzi Yeah, but you can get iron from cereal with a magnet, right? That's a classic demo https://www.youtube.com/shorts/oFOodWFNfaI Is there a step I'm missing?