Solving the decades-old problem of just what glass is

It has been known that that despite its solid appearance, glass and gels are actually in a "jammed" state of matter — somewhere between liquid and solid — that moves very slowly. Paddy Royall from the University of Bristol in England, with colleagues in Canberra, Australia and Tokyo, has shown that glass fails to be a solid due to the special atomic structures that form in a glass when it cools. Now, metallic glass could revolutionize aircraft structure

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