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your battery affixing trick should be possible with only 1 permanent magnet, lying between the two batteries, and with the induced magnetization of the battery's cases being sufficient to attract the clips. might not be as secure, but try it.
concretefeet 4 months ago
Very good lesson for what a capacitor is often used for. Great demonstration!
hungrygit 6 months ago
@hungrygit Thanks. :-)
field16b 6 months ago