THE RELATIONSHIP BETWEEN LIQUID, SUPERCOOLED AND GLASSY WATER

That water can exist in two distinct 'glassy' forms-low- and high-dens ity amorphous Ice-may provide the key to understanding some of the puz zling characteristics of cold and supercooled water, of which the glas sy solids are more-viscous counterparts. Recent experimental and theor etical studies of both liquid and glassy water are now starting to off er the prospect of a coherent picture of the unusual properties of thi s ubiquitous substance.