【自由研究】科学実験！光ファイバーを使って光通信を調べてみよう！【科学でワオ！365】
Synopsis
光ファイバーを使って、光通信がどんな通信技術なのか、調べてみよう。光通信は、音の情報を光の強さの変化に変えているよ！
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