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지문채취와 손전등만들기

July 6, 2017

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James Bond의 펜

July 5, 2017

 

꼬마전구에 불을 밝혀라!

간단한 펜 전등을 이용해 전류의 흐름을 이해하는 실험 키트를 혼자 완성시켰답니다.

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