Impahla yokumuncwa kwensimbi ye-magnetite iye yatholwa isikhathi eside.Emiqulu eyisishiyagalolunye ye-Lu's spring kanye ne-Autumn Annals, kunesisho esithi: "uma unomusa ngokwanele ukuheha insimbi, ungaholela kuyo."Ngaleso sikhathi, abantu babebiza igama elithi "magnetism" ngokuthi "umusa".Th...
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