Accession Number : AD0416373

Title :   FLOW IN THIN LIQUID FILMS,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES

Personal Author(s) : Scholten,P. C. ; Mysels,K. J.

Report Date : 1962

Pagination or Media Count : 24

Abstract : An improved experimental method for studying vertical soap films slowly pulled out of a solution is described and the interpretation of the optical thickness measurements is discussed. The behavior of mobile films presents complications which are described. Rigid films on the other hand give results for films thicker than 800 1100 Angstroms, which agree very closely with Frankel's law relating film thickness to the velocity of pull-out. Since Frankel's law is derived on the assumption that the viscosity is constant up to the monolayer, this agreement proves the absence of any thick rigidified water layers (or of slip) in the neighborhood of the surface. (Author)

Descriptors :   (*FILMS, LIQUIDS), (*LIQUIDS, FILMS), (*SOAPS, FILMS), (*FLUID FLOW, FILMS), LABORATORY EQUIPMENT, THICKNESS, OPTICAL INSTRUMENTS, OPTICAL PHENOMENA, SURFACES, LITHIUM COMPOUNDS, CHLORIDES, VISCOSITY, TEST METHODS, MEASUREMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE