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The part about magnets and aluminum foil was the giveaway for me. I knew aluminium foil wasn't ferrous but apparently the author didn't.
by jxramos 6y ago
The part about magnets and aluminum foil was the giveaway for me. I knew aluminium foil wasn't ferrous but apparently the author didn't.
- nine_k 6y agoBeing conductive may be enough. Search for videos of a copper ring falling slowly on a strong magnet (or vice versa); eddy currents create a strong magnetic field.