A mixture of mineral oil and orange fluorescent tracer over fluorescent laundry detergent shows flow over an airfoil in a low speed wind tunnel.

By Hannah Schumaker, Mark Carter, Jacob Varhus, and Gage Henrich for Spring 2013 Team First.
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A mixture of mineral oil and orange fluorescent tracer over fluorescent laundry detergent shows flow over an airfoil in a low speed wind tunnel.

Flow over an airfoil in a low speed wind tunnel is shown using oil flowing over fluorescent laundry detergent.

Droplets of fluorescent All laundry detergent and a mixture of oil and a fluorescent tracer were placed linearly across the floor of a low speed wind tunnel.

Dyed water injected into corn syrup in a Hele-Shaw cell results in the Saffman-Taylor fingering instability.

Dyed water injected into corn syrup in a Hele-Shaw cell results in the Saffman-Taylor fingering instability.

Lifting an aluminum block during wet sanding reveals dendritic fingering, caused by the Saffman-Taylor instability. Various oil concentrations in the slurry are shown.

Dyed water injected into corn syrup in a Hele-Shaw cell results in the Saffman-Taylor fingering instability.

Total internal reflection in a water stream traps three lasers.

Total internal reflection in a water stream traps three lasers. As the water level in the supply tank dropped, beams were eliminated, changing the color in the catch bucket.

Total internal reflection in a water stream traps three lasers.