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<span dir="ltr" style="margin-top:0; margin-bottom:0;">That is amazing. The Wikipedia article below is worth reading for more details. The behavior was mentioned almost 200 years ago.</span>
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<br><span dir="ltr" style="margin-top:0; margin-bottom:0;">The persistence of conduction after the RF field stops seems like magic. There is no hint of how this works in the wiki. Maybe YouTube guy explained it? (I confess I didn't listen to all he said.) The 19th century stuff mostly used iron filings and carbon particles as compared to the aluminum of the YouTube.</span>
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<br><span dir="ltr" style="margin-top:0; margin-bottom:0;"><a href="https://en.wikipedia.org/wiki/Coherer?wprov=sfla1">https://en.wikipedia.org/wiki/Coherer?wprov=sfla1</a></span>
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<br><span dir="ltr" style="margin-top:0; margin-bottom:0;">Pete</span>
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