Abstract
IF a strong light beam falls on the surface of a liquid, most of it will be reflected and refracted in certain directions, but a small part will be scattered in all other directions. This light scattering is caused by small surface ripples (corrugations) arising from thermal motion. The scattering intensity is proportional to kT/γ, where k is the Boltzmann constant, T the absolute temperature and γ the surface tension. In the case of a thin, free, liquid film (as found in soap bubbles), the scattered light also contains information about the interaction forces between the two film surfaces. According to the theory of Vrij1, the second derivative, d2F/dh2, of the interaction free energy, F, between the two film surfaces, with respect to the film thickness, h, can be obtained in this way.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
