How to Make an Electromagnet
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How to Make an Electromagnet
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physicsfun on Instagram: "Perpetual Dolphin Wheel: another kinetic art desk toy from the 70s- the rotor will stay in motion for weeks, until the hidden 9V battery is depleted. The rotor has a magnet embedded within each dolphin- and an extremely simple and ingenious circuit within the base (comprised of: a coil, a battery, and one transistor), senses the approaching magnets and energizes the coil to gives these magnets a push as the rotor passes through the middle. Similar to the Andrew’s Space
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physicsfun on Instagram: "Perpetual Dolphin Wheel: another kinetic ar…
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Relya AI on Instagram: "Turn a simple steel nail into a powerful electromagnet using just a battery and copper wire. Wrap insulated copper wire tightly around the nail (the more coils, the stronger the magnet). Connect both ends of the wire to a battery (AA, 9V, or D-cell works great). Boom — the nail instantly becomes a magnet strong enough to pick up paperclips, screws, or even small metal objects. When you disconnect the battery, the magnetism disappears. Simple science, zero cost, massive wo
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