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fazendo lindas flores usando papel toalha i massa de modelar
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Uma taça romana de 1.600 anos que muda de cor desafiou a ciência: iluminada por fora fica verde, mas quando a luz passa por trás, brilha em um vermelho rubi intenso. O segredo revelado por cientistas na década de 90 é que os artesãos misturavam partículas de ouro e prata em escala nanométrica no vidro! Hoje ela está no Museu Britânico. Já conhecia essa tecnologia milenar? Curta, comente e siga @escritosapocrifos para mais mistérios da história!
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