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A comment on A meteor or alien tech: Harvard professor plans UFO expedition. Parent comment

Re:A meteor or alien tech: Harvard professor plans UFO exped... by wnkrshm on Friday August 12, 2022 @06:38PM (#32444809)
Paramagnetism. There is also Diamagnetism and Anti-Ferromagnetism.
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Re:A meteor or alien tech: Harvard professor plans UFO exped... by a9h74j on Friday August 12, 2022 @07:42PM (#32445286)
Definitely. But of course a metal detector coil can also look at simple change of inductance, hence responding to conductivity even with magnetic mu = 0.
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