Magnetic fluid

Published February 14, 2021

Magnetic fluid

People have long tried to obtain magnetic fluids by shaking fine powders of ferromagnetic material in water, oil and other liquids. But such a magnetic fluid disintegrated, and the powder settled: it was too large and heavy. Only in the 60s. XX century the ferrite powder was ground so well that, being poured into a mixture of kerosene...

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