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Such liquids can be effective in visualizing dynamic currents for the study and demonstration of fluid flow. They are suspensions of microscopic crystalline platelets which, When put into motion, orient the suspended platelets, causing the localized, preferential alignment of the particles (with the larger dimensions parallel to the planes of shear in the moving liquid). With appropriate illumination, volumes containing particles with an overall orientation different to neighbouring volumes (due to the action of different shear planes) will reflect differing intensities of light, making the evolution and movement of the currents visible.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Rheoscopic_fluid". A list of authors is available in Wikipedia.|