Clouds 2 – Zach Taylor

October 5th 2025, 2:41 PM

Unstable atmosphere with nimbostratus and altostratus rain clouds. From CO-93 North outside of Boulder, looking northwest.

Food dye in milk.

Soap reduces the surface tension of milk, driving a flow that mixes in food dye.

Soap lowers the surface tension of milk in the center of a shallow dish, resulting in food dye being pulled towards the edges

Surface tension driven flow. Dish detergent dropped on food coloring in milk reduces local surface tension, which pulls the dye to the edges.

Dish soap on a pool of food dye drops the surface tension of oobleck, which pulls the spread of the dye.

Cigarette smoke is trapped under two glasses. The surface under the glass on the right was warmed, creating convection currents in the smoke.

Smoke rises and spreads from a candle smothered by a glass.

A buoyant plume of incese smoke forms a curl.

Sparks fly up from a wood fire at 1 m/s.

Flaming WD-40 exits a glass bottle.