Birdwatch Archive

Birdwatch Note

2024-08-09 13:30:10 UTC - MISINFORMED_OR_POTENTIALLY_MISLEADING

銅メダルの素材に使われている銅は、一般的に酸化することが広く知られています。 http://www.iri.pref.niigata.jp/topics/R3/3kin12.html 酸化が進むと、銅の表面に酸化銅(緑青)が形成され、見た目が変色することがあります。特に、手で触れることや、汗や水分が付着することで酸化が加速されるため、銅メダルの取り扱いには十分な注意が必要です。手の油脂や水分がメダルの表面に残ると、酸化がさらに進行しやすくなります。 銅の酸化速度については、以下のURLに掲載されている研究からも読み取ることができ、条件によってはわずか24時間で真っ黒に変色することがわかっています。 https://www.tsukuba.ac.jp/community/students-kagakunome/shyo-list/pdf/2008/chu_9.pdf

Written by 1A5F5255EB9F13BF544F1FBA56AA6CD819AC84CAE428AE0D418FC3C56D97353A
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All Information

  • ID - 1821901788297224551
  • noteId - 1821901788297224551
  • participantId -
  • noteAuthorParticipantId - 1A5F5255EB9F13BF544F1FBA56AA6CD819AC84CAE428AE0D418FC3C56D97353A Participant Details
  • createdAtMillis - 1723210210286
  • tweetId - 1821784155275063716
  • classification - MISINFORMED_OR_POTENTIALLY_MISLEADING
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  • summary
    • 銅メダルの素材に使われている銅は、一般的に酸化することが広く知られています。 http://www.iri.pref.niigata.jp/topics/R3/3kin12.html 酸化が進むと、銅の表面に酸化銅(緑青)が形成され、見た目が変色することがあります。特に、手で触れることや、汗や水分が付着することで酸化が加速されるため、銅メダルの取り扱いには十分な注意が必要です。手の油脂や水分がメダルの表面に残ると、酸化がさらに進行しやすくなります。 銅の酸化速度については、以下のURLに掲載されている研究からも読み取ることができ、条件によってはわずか24時間で真っ黒に変色することがわかっています。 https://www.tsukuba.ac.jp/community/students-kagakunome/shyo-list/pdf/2008/chu_9.pdf

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