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In order to collect data from our experiment, we tracked using video processing software buoyant particles at the surface of the fluid, as well as particles with density in between that of the two fluids which sat just above the frontal boundary. The shape of the front, although relatively stable, did vary slightly throughout the course of the experiment, as can be seen from the following images.
Figure 4.1: The progression of the front. The time stamp shown is relative to the time at which the can was removed, allowing the two fluids to meet.
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We also track the particles which sit just above the frontal surface. These are the blue spheres seen in Figure 4.1.
These particles are more different to track, hence the tracks are shorter, and the concentration of dye and particles at the center of the front made it impossible to track the particles for very small radii.
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