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Particle Separation Down an Incline

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Silicone oil filled with blue and red particles begins flowing down an incline. Text reads, "The particles and oil are thoroughly mixed and introduced into the reservoir. Once the reservoir gate is lifted, the mixture begins to flow down the incline."

A close shot of the flow front, showing large red particles overtaking the smaller blue particles.

Composite image with two side views of the flow. The smaller one shows an even distribution of blue and red particles across the thickness. The larger image, from ~60 seconds later, shows more red particles near the top of the layer. Text reads, "As time progresses, separation begins to occur."

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