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Hot fluids filled into this mug start to stir them self, without electrical energy.
japanese.engadget.com/2019/11/

@globalc hm. Peltier element generates electricity that drives electric motor that rotates magnetic stirrer?

@jwildeboer Not sure. They say "no maintenance needed", so I would guess against electricity used here. This seems to be given: temperature difference to outside is used, <55°C fluids do not emit enough energy, magnetic force for stirring element used. Will become clear when sales start, end of Jan. 2020. IRC people just named "stir-ling cup", after stirling motor..

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