Accession Number:

AD0416373

Title:

FLOW IN THIN LIQUID FILMS,

Descriptive Note:

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES

Personal Author(s):

Report Date:

1962-01-01

Pagination or Media Count:

24.0

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 Frankels law relating film thickness to the velocity of pull-out. Since Frankels 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE