The rotation of magnets with different poles creates an alternating magnetic field. In aluminum, this creates an eddy current that heats it up. This is similar to the operation of an induction cooker, only there an alternating field is created electronically with a high frequency of 20-100 kHz. By the way, the magnets are kept cold!
music: Glen CanyonВращение магнитов с разными полюсами создает переменное магнитное поле. В алюминии это рождает вихревой ток (токи Фуко), который нагревает его. Это аналогично работе индукционной плиты, только там переменное поле создается электронным способом с высокой частотой 20-100 кГц. Кстати, магниты остаются холодными!
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