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Abstract
Equipment and techniques for photography of two-phase flow are described. The application of photography to the determination of flow patterns, to the study of climbing and falling liquid film systems and to the study of two-phase flow accompanied by vapour generation, is discussed. The work has included the use of X-radiography, the use of microscopic techniques in studying the interface of a falling film, the use of axially directed photography in evaluating climbing film flow and the use of photography in studying droplet mass transfer.