Iron - the dance.

The iron filings shown are in a crystal structure that is ferromagnetic. They can therefore be manipulated using a sequence of magnets that move.
Below the Curie temperature, because the iron becomes ferromagnetic with magnetic moments aligned, say to [001], it becomes slightly tetragonal, in which rotations about [100] and [010] must be combined with time reversal to preserve the directions of the spins.
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[@josealbertobejaranoulloa2280]

What a beautiful dance, dear Harry. Thanks for sharing.

[@bhadeshia123]

Thank you, it is enticing what inanimate powder can do.

[@deepak.dinkar]

The music is perfectly synchronized with the dance step, made it super interesting.

[@bhadeshia123]

Thank you, Deepak. I tried my best.