A Microwave Technique For Measuring Surface Tension

Abstract

Problem addressed: Films on the ocean surface affect gas transport at the air-sea interface, damp capillary waves thus influencing radar returns and light scattering, and are indicators of biological activity and pollution. The presence of a film causes changes in surface tension of films on water. However, 'classical' methods for measuring surface tension involve breaking the surface (and often the film) by inserting a plate or ring, or by taking a sample and forming drops. Therefore non-contact methods for measuring surface tension are desirable.