9 () posted 3 years ago by NachtAffen 3 years ago by NachtAffen +9 / -0 7 comments share 7 comments share save hide report block hide replies
These might actually be iron filings, which means you could test it at home.
It's an interesting experiment whether or not graphene was involved.
Might be like the realignment of an existing field. A magnet below the fillings and phone radially polarizes due to directional antenna