実験レシピ　放射線の飛跡を霧箱で観察しよう！
2:10
Added: 2 years ago
From: WAOkagaku
Views: 33,359
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  • 溶接棒の赤い印が付いたのも、すごいよ

    hyakuman8789 3 months ago

  • ユークセン石とかｗｗ普通手にはイランｗ

    goruhumann 4 months ago

  • ふつうに手に入るものなの？

    KKODIN 5 months ago

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