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A caneta moderna surgiu em 1938 quando László Bíró criou a caneta esferográfica. Ele usou uma tinta que secava rápido e colocou uma bolinha de metal na ponta para liberar a tinta de forma controlada. Assim, a caneta passou a escrever sem borrar e sem precisar ficar mergulhando na tinta.
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A caixa-preta foi inventada pelo engenheiro australiano David Warren na década de 1950. Ele trabalhava investigando acidentes aéreos e percebeu que seria muito mais fácil descobrir a causa se houvesse um equipamento capaz de gravar as vozes da cabine e os dados do voo. Assim surgiu o Flight Data Recorder e o Cockpit Voice Recorder — o que chamamos hoje de “caixa-preta”. Curiosidade: Apesar do nome, a caixa-preta não é preta. Ela é laranja-vivo, para ser facilmente encontrada.
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