The rotating-bubble apparatus

Publisher Website
Google Scholar
Abstract
An improved rotating‐bubble device for measuring surface and interfacial tension of liquids has been built and its accuracy checked and found comparable with published data. It is based on the phenomenon by which a fluid phase, when placed in a denser liquid contained in a horizontal tube rotating about its long axis, deforms into a long cylindrical thread until centrifugal and interfacial forces balance. The present device permits higher angular rotational velocities and its quasi‐frictionless motion reduces vibrations and overheating. The theory and the procedure of the method are summarized briefly and several experimental results to corroborate the theory are presented.
Keywords