⚡️➰🔩

#electric current #wire coil #solenoid #iron core #electromagnet structure #physics experiment

🌍🪲🔥

#earth magnetic field #geodynamo #molten core #iron core #metallic core #planet heat

🌍🔥🌡️⚙️

#inner core #iron core #high pressure #planet core #metallic core

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#metallic core #hot core #earth's center #planetary geology #core heat #core pressure #iron core