Freesurface phenomena under low and zerogravity conditions
Abstract
An apparatus to measure contact angle was constructed to exploit the proposed internalcorner criterion. If 2 alfa is the internal angle between two intersecting vertical planes and gamma is the contact angle, a meniscus at the corner rises to a finite height if alfa + gamma pi/2 and to an infinite height if alfa + gamma pi/2. The apparatus operates by decreasing the angle alfa from pi/2 until the meniscus height changes abruptly. A number of liquids are tested on glass and plexiglas.
 Publication:

California Institute of Technology Report
 Pub Date:
 June 1985
 Bibcode:
 1985cait.rept.....C
 Keywords:

 Angles (Geometry);
 Contactors;
 Corners;
 Low Weight;
 Measuring Instruments;
 Surface Properties;
 Weightlessness;
 Gravitational Effects;
 Mathematical Models;
 Space Commercialization;
 Structural Analysis;
 Fluid Mechanics and Heat Transfer