Como é que é a gravidade sem massa? As leis inovadoras de Newton definem universalmente os efeitos da gravidade, enquanto o conceito de Einstein de espaço-tempo deformado a descreve em termos de curvatura. Tradicionalmente, os cientistas associam a gravidade apenas à matériaUm estudo recente propõe uma ideia pouco convencional: a gravidade poderia existir sem...
O One Za'abeel, um impressionante arranha-céus duplo que adorna a agitada linha do horizonte do Dubai, está prestes a reclamar o título de edifício cantilever mais extenso do mundo. Em termos simples, um cantilever é uma estrutura que se estende horizontalmente para além do seu suporte vertical, criando uma saliência sem a necessidade de...
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