Abstract
This paper presents the rheo-optical experimental result of flow through a slit. We used Mach-Zhender interferometer. Distilled water was used as test fluid, and made to flow through a two-dimensional slit, by using a pump of syringe type. Interference fringes were recorded with a digital video camera, for the flow in the range upstream and downstream of the slit. It was observed that the interference fringe changes especially in the downstream even for the distilled water and the change in interference fringes is sensitive to the change in temperature of the test fluid.
