Ending the debate as to whether glass is a solid or a liquid, glass research duo Edgar Zanotto and John Mauro have proposed a new definition—describing a non-crystalline state of matter that continually relaxes toward the liquid state.
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Glass scientists have taken a closer look at the urban legend of glass flow in medieval windows—combining theory and experimental techniques, the results definitely bust the myth and indicate the highest ever direct measurement of glass viscosity at low temperatures.
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