Katya Flaska

A drop of dish soap is introduced into a bowl of water with ground black pepper. Due to the reduction in local surface tension when the dish soap enters, the pepper rapidly moves outward toward the edges of the bowl.

Soap bubbles colored with food dye.

Air comes out of solution as water cools to freezing. If frozen quickly, both large and small bubbles are formed. Pure water freezes first at the periphery, trapping bubbles in the interior.

An aquarium ‘airstone’ generates an air jet, illuminated by red and blue LEDs.

When a water balloon is popped by a pellet gun, the contracting rubber skin and pressure drop disturbs the surface. The water seems to float momentarily before falling. Filmed at up to 1000 fps by a Casio EX-ZR100.

Guiness poured into a glass exhibits downward flow near the surface of the glass as bubbles rise in the center.

When Guinness Draught Stout is poured into a glass with sloping sides, the bubbles formed by nitrogen and CO2 coming out of solution rush upward in the middle of the glass, and the liquid recircualtes downward near the walls, carrying small bubbles along.

Bubbles in chocolate milk, color inverted.

Air bubbles and magnetically excited ferrofluid suspended in liquid soap.

A shaken Lava Light has myriad small globules of melted wax in oil.

An emulsion of olive oil and fluorescent laundry detergent floats on water, illuminated by UV light.