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A comment on The Apple Watch as an Ammeter. Parent comment

Re:The Apple Watch as an Ammeter by parhamn on Wednesday September 11, 2024 @03:36PM (#41514629)
"Don't take in ferromagnetic metals that would get pulled by a 3T magnet with 6 inches of separation" is a bit harder to grok for pretty much everyone.
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Re:The Apple Watch as an Ammeter by user_7832 on Thursday September 12, 2024 @10:03AM (#41521109)
Where does the 6 inches come from? Is that the separation between the MRI machine & the patient?
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