NOTE ON THE DETECTION OF AN APPARENT PHASE TRANSITION OF ADSORBED WATER ON POROUS VYCOR GLASS BY MEASUREMENTS OF DIMENSIONAL CHANGES

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Abstract
A new technique is described for detecting possible phase transitions of adsorbates. The method involves the measurement of length changes of the solid, but only solids for which the surface-to-volume ratio is large could be used with the present form of instrument because of its moderate sensitivity. Using this measurement an apparent phase transition for water adsorbed on porous Vycor glass has been detected at approximately −22 °C.