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Como uma caneta consegue “apagar” a tinta sem rasgar o papel? Neste vídeo, a gente revela o truque químico por trás das canetas apagáveis e mostra por que a borracha delas não funciona do jeito que muita gente imagina. Mas a parte mais estranha vem depois: em certas condições, tudo pode voltar a aparecer novamente. #tinta #caneta # ...
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