水で動く発電装置！備長炭を使った電気工作
2:08
Added: 3 years ago
From: meisousyuppan
Views: 6,355
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  • 金属板がはいっているし、液体が水道水である証拠を示していない­し・・・

    炭素棒（炭）＋金属板＋電解液

    電池の基本構造だ

    tarfreaks 1 year ago

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