Reports

Superdense Water Ice

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Science  02 Jan 1970:
Vol. 167, Issue 3914, pp. 44-45
DOI: 10.1126/science.167.3914.44

Abstract

A new allotropic form of water ice with a density of 2.32 ± 0.15 grams per cubic centimeter has been observed at very low pressures and for temperatures lower than 100°K. It is most likely amorphous.